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

[EX Q]: Sentence: 'a man is holding a camera on a rig while skateboarding in a parking lot'. Count the occurrences of the word 'a' in the given sentence.
[EX A]: 4

[EX Q]: Sentence: 'a young boy preparing his baseball mitt before his game'. Count the occurrences of the word 'his' in the given sentence.
[EX A]: 2

[EX Q]: Sentence: 'a full view of a living room in a house'. Count the occurrences of the word 'a' in the given sentence.
[EX A]:
3