#letter_of_the_alphabet__letter__alphabetic_character  the conventional characters of the alphabet used to represent speech; "his grandmother taught him his letters"
  subtype:  #ascender.letter_of_the_alphabet  #descender.letter_of_the_alphabet  #digraph  #initial  #A  #B  #c  #D  #E  #F  #G  #H  #i  #J  #K  #L  #M  #n  #O  #P  #Q  #R  #S  #T  #U  #V  #W  #X  #Y  #z  #alpha  #beta  #gamma  #delta.letter_of_the_alphabet  #epsilon  #zeta  #eta  #theta  #iota  #kappa  #lambda.letter_of_the_alphabet  #mu  #nu  #xi  #omicron  #pi  #rho  #sigma  #tau  #upsilon  #phi  #chi  #psi  #omega  #aleph  #beth  #gimel  #daleth  #he  #waw  #zayin  #heth  #teth  #yodh  #kaph  #lamedh  #mem  #nun.letter_of_the_alphabet  #samekh  #ayin  #pe  #sadhe  #qoph  #resh  #sin  #shin.letter_of_the_alphabet  #taw  #polyphone  #block_letter  #vowel  #consonant.letter_of_the_alphabet
  part of:  #spelling
  member of:  #alphabet
  supertype:  #grapheme__character__graphic_symbol__graphicsymbol  a written symbol that is used to represent speech; "the Greek alphabet has 24 characters"
     supertype:  #written_symbol__writtensymbol__printed_symbol__printedsymbol  a written or printed symbol
        supertype:  #symbol  an arbitrary sign (written or printed) that has acquired a conventional significance
           supertype:  #signal__sign__signaling  any communication that encodes a message; "signals from the boat suddenly stopped"
              supertype:  #communication  something that is communicated between people or groups
                 supertype:  pm#description_content/medium/container__descriptioncontent/medium/container
                    supertype:  pm#non_spatial_object_that_is_not_an_attribute_or_quality_or_measure
                       supertype:  pm#non_spatial_object__nonspatialobject  abstraction or description content/medium/container (a description medium that has some spatial feature is both instance of sumo#object and pm#non_spatial_object
                          supertype:  pm#entity  something that can be "involved" in a situation
                             supertype:  pm#thing__something___T__t___3D_or_4D_thing_or_anything_else  any category (type or individual) is instance of this type; any type is also a subtype of this type
                          supertype:  cyc#intangible  The collection of things that are not physical -- are not made of, or encoded in, matter. Every cyc#Collection is a cyc#intangible (even if its instances are tangible), and so are some cyc#individuals.  Caution: do not confuse `tangibility' with `perceivability' -- humans can perceive light even though it's intangible--at least in a sense.
                             supertype:  cyc#partially_intangible__partiallyintangible  The collection of things that either are wholly intangible (see cyc#Intangible) or have at least one intangible (i.e. immaterial) part (see cyc#intangibleParts). This includes intangible individuals, such as instances of cyc#Number-General  or cyc#Agreement, as well as non-individuals (all of which are intangible), i.e. instances of cyc#SetOrCollection.  It also includes things that have both tangible and intangible components (see cyc#CompositeTangibleAndIntangibleObject),  such as a printed copy of a newspaper (as its information content is intangible) or a person (as her mental states are intangible).
                                supertype:  pm#thing__something___T__t___3D_or_4D_thing_or_anything_else  any category (type or individual) is instance of this type; any type is also a subtype of this type
                 supertype:  #social_relation  a relation between living organisms (especially between people)
                    supertype:  #relation  an abstraction belonging to or characteristic of two entities or parts together
                       supertype:  pm#thing_that_can_be_seen_as_a_relation  usable as relation type
                          supertype:  pm#thing_playing_some_role  category to classify things according to roles/viewpoints; classification under this category is application-dependant
                             supertype:  pm#thing__something___T__t___3D_or_4D_thing_or_anything_else  any category (type or individual) is instance of this type; any type is also a subtype of this type

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