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: brook lamprey 
 Entity 2: skull
no

Entity 1: facial expression 
 Entity 2: claws
no

Entity 1: event 
 Entity 2: ribosome

no