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: "Rennie--" That was Campbell climbing up from the raft after another weary passage across.

SOLUTION: Campbell

PROBLEM: Mary Louise pushed forward and sat beside her friend.

SOLUTION: Mary Louise

PROBLEM:  The black cat grabs the yarn ball and start playing with it.

SOLUTION:
black cat