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: gravel 
 Entity 2: tin
yes

Entity 1: mica 
 Entity 2: magnesium
yes

Entity 1: noncultivated plant 
 Entity 2: pollen

yes