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: bison 
 Entity 2: gas
no

Entity 1: accessory gland 
 Entity 2: secretion
yes

Entity 1: compound 
 Entity 2: formaldehyde

yes