#function_word__closed-class_word  a word that serves a grammatical function but has no identifiable meaning
  supertype:  word  a unit of language that native speakers can identify; "words are the blocks from which sentences are made"; "he hardly said ten words all morning"
  part:  grammatical_meaning
  subtype:  determiner__determinative  one of a limited class of noun modifiers that determine the referents of noun phrases
     subtype:  article.determiner  (Grammar) a determiner that may indicate the specificity of reference of a noun phrase
        subtype:  definite_article  a determiner (as `the' in English) that indicates specificity of reference
        subtype:  indefinite_article  a determiner (as `a' or `some' in English) that indicates non-specificity of reference
  subtype:  preposition  a function word that combines with a noun or pronoun or noun phrase to form a prepositional phrase that can have an adverbial or adjectival relation to some other word
  subtype:  pronoun  a function word that is used in place of a noun or noun phrase
     subtype:  anaphoric_pronoun__anaphoricpronoun  a pronoun that refers to an antecedent
     subtype:  demonstrative_pronoun__demonstrative  a pronoun that points out an intended referent
     subtype:  personal_pronoun  a pronoun expressing a distinction of person
        subtype:  reflexive_pronoun__reflexivepronoun__reflexive  a personal pronoun compounded with -self to show the agent's action affects itself
     subtype:  relative_pronoun  a pronoun (as `that' or `which' or `who') that introduces a relative clause referring to some antecedent
  subtype:  conjunctive__conjunction__connective  an uninflected function word that serves to conjoin words or phrases or clauses or sentences
     subtype:  coordinating_conjunction  a conjunction (like `and' or `or') that connects two identically constructed grammatical constituents
     subtype:  subordinate_conjunction__subordinateconjunction__subordinating_conjunction__subordinatingconjunction  a conjunction (like `since' or `that' or `who') that introduces a dependent clause
  subtype:  particle.function_word  a function word having different uses in different languages

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