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: very coarse - grained igneous rock 
 Entity 2: ear
no

Entity 1: alum 
 Entity 2: hair
no

Entity 1: x chromosome 
 Entity 2: gene

yes