TASK DEFINITION: In this task, you need to count the occurrences of the given word in the given sentence.
PROBLEM: Sentence: 'a snowboarder in a gray jacket is doing a trick'. Count the occurrences of the word 'a' in the given sentence.

SOLUTION: 3

PROBLEM: Sentence: 'a child laying on a bed with his head hanging up side down and a teddy bear leaning against the bed'. Count the occurrences of the word 'a' in the given sentence.

SOLUTION: 3

PROBLEM: Sentence: 'a busy street with people and calves on it'. Count the occurrences of the word 'calves' in the given sentence.

SOLUTION:
1