#grammatical_category__grammaticalcategory__syntactic_category__syntacticcategory  a category of words having the same grammatical properties
  supertype:  #class.aggregation__clas__family  a collection of things sharing a common attribute; "there are two classes of detergents"
  subtype:  #grammatical_case__grammaticalcase__case  nouns or pronouns or adjectives (often marked by inflection) related in some way to other words in a sentence
     subtype:  #nominative_case__nominative__subject_case__subjectcase  the category of nouns serving as the grammatical subject of a verb
     subtype:  #oblique_case__obliquecase__oblique  any grammatical case other than the nominative
        subtype:  #accusative_case__accusative__objective_case__objectivecase  the category of nouns serving as the direct object of a verb
        subtype:  #dative_case__dative  the category of nouns serving as the indirect object of a verb
        subtype:  #genitive_case__genitive__possessive_case  the case expressing ownership
        subtype:  #locative_case__locative  the case indicating where the action described by the verb occurred
        subtype:  #instrumental_case__instrumental  the case indicating the instrument used in performing the action of the verb
        subtype:  #vocative_case__vocative  the case (in some inflected languages) used when the referent of the noun is being addressed
        subtype:  #ablative_case__ablative  the case indicating the agent in passive sentences or the instrument or manner or place of the action described by the verb
  subtype:  #part_of_speech__form_class__word_class  one of the traditional categories of words intended to reflect their functions in a grammatical context
     subtype:  #major_form_class  any of the parts of speech of traditional grammar
        subtype:  #noun.major_form_class  a word that can serve as the subject or object of a verb
        subtype:  #verb  a word that serves as the predicate of a sentence
           subtype:  #infinitive  the uninflected form of the verb
              subtype:  #split_infinitive__splitinfinitive  an infinitive with an adverb between `to' and the verb (e.g., `to boldly go')
           subtype:  #participle  a non-finite form of the verb; in English it is used adjectivally and to form compound tenses
              subtype:  #present_participle__presentparticiple  a participle expressing present action; in English is formed by adding -ing
              subtype:  #past_participle__perfect_participle__perfectparticiple  a participle that expresses completed action
           subtype:  #transitive_verb_form__transitive_verb  a verb (or verb construction) that requires an object to be grammatical
              subtype:  #doubly_transitive_verb_form__doubly_transitive_verb  a transitive verb that takes both a direct and an indirect object
           subtype:  #intransitive_verb_form__intransitive_verb  a verb (or verb construction) that does not take an object
        subtype:  #adjective.major_form_class  the word class that qualifies nouns
        subtype:  #adverb  the word class that qualifies verbs or clauses
  subtype:  #number.grammatical_category  (linguistics) the grammatical category for the forms of nouns and pronouns and verbs that are used depending on the number of entities involved (singular or dual or plural); "in English the subject and the verb must agree in number"
  subtype:  #grammatical_person__grammaticalperson  a grammatical category of pronouns and verb forms; "stop talking about yourself in the third person"
     subtype:  #first_person__firstperson  pronouns and verbs used to refer to the speaker or writer of the language in which they occur
     subtype:  #second_person  pronouns and verbs used to refer to the person addressed by the language in which they occur
     subtype:  #third_person__thirdperson  pronouns and verbs that are used to refer to something other than the speaker or addressee of the language in which they occur
  subtype:  #grammatical_gender__grammaticalgender__gender  a grammatical category in inflected languages governing the agreement between nouns and pronouns and adjectives; in some languages it is quite arbitrary but in Indo-European languages it is usually based on sex or animateness
     subtype:  #feminine  a gender that refers chiefly (but not exclusively) to females or to objects classified as female
     subtype:  #masculine  a gender that refers chiefly (but not exclusively) to males or to objects classified as male
     subtype:  #neuter  a gender that refers chiefly (but not exclusively) to inanimate objects (neither masculine nor feminine)
  subtype:  #tense  a grammatical category of verbs used to express distinctions of time
     subtype:  #present_tense__presenttense__present  a verb tense that expresses actions or states at the time of speaking
        subtype:  #historical_present  the use of the present tense to describe past actions or states
     subtype:  #aorist  a verb tense in some languages (classical Greek; Sanskrit) expressing action (especially past) without indicating its completion or continuation
     subtype:  #past_tense__past  a verb tense that expresses actions or states in the past
        subtype:  #preterit__preterite  a term formerly used to refer to the simple past tense
     subtype:  #future_tense__future  a verb tense that expresses actions or states in the future
     subtype:  #progressive_tense__progressivetense__progressive__imperfect__imperfect_tense__imperfecttense__continuous_tense  a tense of verbs used in describing action that is on-going
        subtype:  #present_progressive_tense__presentprogressivetense__present_progressive__presentprogressive  a tense used to express action that is on-going at the time of utterance
        subtype:  #past_progressive_tense__past_progressive  a progressive tense used to describe on-going action in the past; "`I had been running' is an example of the past progressive"
        subtype:  #future_progressive_tense__future_progressive  a progressive tense used to express action that will be on-going in the future; "`I will be running' is an example of the future progressive"
     subtype:  #perfective_tense__perfective__perfect__perfect_tense__perfecttense  a tense of verbs used in describing action that has been completed (sometimes regarded as perfective aspect)
        subtype:  #present_perfect_tense__presentperfecttense__present_perfect__presentperfect  a perfective tense used to express action completed in the present; "`I have finished' is an example of the present perfect"
        subtype:  #past_perfect_tense__past_perfect__pluperfect__pluferfect_tense  a perfective tense used to express action completed in the past; "`I had finished' is an example of the past perfect"
        subtype:  #future_perfect_tense__future_perfect  a perfective tense used to describe action that will be completed in the future; "`I will have finished' is an example of the future perfect"

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