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: At the Well they had not long to wait before Mr. McLean suddenly appeared out of the mist, and to their astonishment Miss Ailie was leaning on his arm.

SOLUTION: Mr. McLean

PROBLEM: Before she reached the dentist's door she thought out her plan of action: she would run laughing up the stairs, dash into the dentist's room and demand twenty-five roubles.

SOLUTION: she

PROBLEM: She seemed to be thinking deeply, and when she turned round again, it was to shake her queerly ornamented head.

SOLUTION:
She