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: acne 
 Entity 2: four toe
no

Entity 1: earth 's mantle 
 Entity 2: nerve
no

Entity 1: gas turbine 
 Entity 2: mercury

no