instruction:
In this task, you are given a sentence which contains a motion and your task is to identify the physical entities involved in the motion. The input sentence can have more than one entity and also there is at least one entity that takes part in physical motion. There are two types of entities which are animate (beings that are alive) and inanimate entities (beings that are not alive).
question:
 The boat then takes off and helps the girl ride along while she falls the first time then successfully rides.
answer:
girl


question:
 He is playing an old accordian.
answer:
He


question:
 The people hit the ball back and fourth while others watch on the side.
answer:

people