TASK DEFINITION: In this task, you need to count the occurrences of the given word in the given sentence.
PROBLEM: Sentence: 'a woman is riding a wave on a surfboard'. Count the occurrences of the word 'a' in the given sentence.

SOLUTION: 3

PROBLEM: Sentence: 'a pig in a make shift shelter being watched by a cat'. Count the occurrences of the word 'a' in the given sentence.

SOLUTION: 3

PROBLEM: Sentence: 'a bench sitting under a mirror and next to a wall'. Count the occurrences of the word 'wall' in the given sentence.

SOLUTION:
1