(subclass StringInstrument MusicalInstrument) | Music.kif 1186-1186 | String instrument is a subclass of musical instrument |
(subclass Violin StringInstrument) | Music.kif 1224-1224 | Violin is a subclass of string instrument |
(subclass Piano StringInstrument) | Music.kif 1228-1228 | Piano is a subclass of string instrument |
(subclass Cello StringInstrument) | Music.kif 1232-1232 | Cello is a subclass of string instrument |
(subclass Guitar StringInstrument) | Music.kif 1235-1235 | Guitar is a subclass of string instrument |
(subclass Cithara StringInstrument) | Music.kif 1312-1312 | Cithara is a subclass of string instrument |