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

Sentence: 'a man fills a tin with a liquid substance'. Count the occurrences of the word 'a' in the given sentence.
3

Sentence: 'a man standing in front of a jet engine'. Count the occurrences of the word 'a' in the given sentence.
2

Sentence: 'a smiling man in a kitchen holding a cooked turkey'. Count the occurrences of the word 'a' in the given sentence.

3