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: grass 
 Entity 2: spikelet
yes

Entity 1: ground creep 
 Entity 2: rhizome
yes

Entity 1: earth 's crust 
 Entity 2: rock

yes