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: liverwort 
 Entity 2: sting
no

Entity 1: foot rot 
 Entity 2: tip
yes

Entity 1: rock 
 Entity 2: titanium

yes