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).

Q: Entity 1: lamb 's ear 
 Entity 2: turbine blade

A: no
****
Q: Entity 1: black bear 
 Entity 2: spur

A: no
****
Q: Entity 1: rubber 
 Entity 2: long-chain polymer molecules

A:
yes
****