TASK DEFINITION: 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).
PROBLEM: When she left him there was a new look upon her face--a very joyful look--which caused me to ask her what had happened.

SOLUTION: she

PROBLEM:  The lady finishes and throws her hands in the air.

SOLUTION: lady

PROBLEM:  A person plays the battery using two sticks.

SOLUTION:
person