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: nut 
 Entity 2: iron
yes

Entity 1: cytoplasm 
 Entity 2: fluid
no

Entity 1: concrete 
 Entity 2: calcium carbonate

yes