In this task, you need to count the occurrences of the given word in the given sentence.

Sentence: 'a woman holding a child are looking at a cow over a fence'. Count the occurrences of the word 'a' in the given sentence.
4

Sentence: 'four giraffes stand around the grassy area of a corral'. Count the occurrences of the word 'giraffes' in the given sentence.
1

Sentence: 'motorcycle parked on road waiting for train to pass'. Count the occurrences of the word 'parked' in the given sentence.
1