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: fish 
 Entity 2: barb
no
A barb is a pointed projection from the surface of a fish, such as the barbs on a feather. However, it is not a part of the main body of fish. So the answer is "no"..