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

Sentence: 'a computer tore apart by a monitor keyboard and mouse on a desk'. Count the occurrences of the word 'a' in the given sentence.
3

Sentence: 'a table top with some laptops on it'. Count the occurrences of the word 'with' in the given sentence.
1

Sentence: 'an elephant on a dirt ground in front of a canvas'. Count the occurrences of the word 'in' in the given sentence.
1