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: acid 
 Entity 2: uterus
no

Entity 1: king penguin 
 Entity 2: hip socket
no

Entity 1: nut 
 Entity 2: iron

yes