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: vertebrae 
 Entity 2: mast cell
yes

Entity 1: cell 
 Entity 2: biomembrane
yes

Entity 1: oil 
 Entity 2: spore

no