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: flatworm 
 Entity 2: claws
no

Entity 1: bike 
 Entity 2: bicycle wheel
yes

Entity 1: cuplike structure 
 Entity 2: capillary

yes