TASK DEFINITION: In this task, you need to count the occurrences of the given word in the given sentence.
PROBLEM: Sentence: 'a close up of a tennis player with a scary mask on'. Count the occurrences of the word 'a' in the given sentence.

SOLUTION: 3

PROBLEM: Sentence: 'the manufacturers box for the nintendo wii on the floor'. Count the occurrences of the word 'manufacturers' in the given sentence.

SOLUTION: 1

PROBLEM: Sentence: 'a green and white train waiting at a station'. Count the occurrences of the word 'a' in the given sentence.

SOLUTION:
2