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: propeller 
 Entity 2: base pair
no

Entity 1: diatom 
 Entity 2: silicon dioxide
yes

Entity 1: megabat 
 Entity 2: ear

yes