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: hemlock tree 
 Entity 2: mobile charge particle
no

Entity 1: penguin 
 Entity 2: nutrient
no

Entity 1: bird bone 
 Entity 2: bird 's lung

yes