musical instrument classification

Deductions

• musical instrument classification has part class ⇐ (entity is a class), (musical instrument classification has part entity)
• musical instrument classification has part variable-order class ⇐ (entity is a variable-order class), (musical instrument classification has part entity)
• musical instrument classification has part entity ⇐ (family of musical instruments is a entity), (musical instrument classification has part family of musical instruments)
• musical instrument classification is for example Guizzi's classification of musical instruments ⇐ (Guizzi's classification of musical instruments is a musical instrument classification), (is a is inverse of is for example)