Given two entities as input, classify as "yes" if second entity is the part of the first entity. Otherwise classify them as "no". These are entities of meronym In linguistics, meronymy is a semantic relation between a meronym denoting a part and a holonym denoting a whole. In simpler terms, a meronym (i.e., second entity) is in a part-of relationship with its holonym (i.e., first entity).

Entity 1: shoot 
 Entity 2: wood
yes

Entity 1: matrix 
 Entity 2: cellulose fibre
yes

Entity 1: billy goat 
 Entity 2: horn base

yes