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

Sentence: 'a keyboard on a desk beneath a monitor'. Count the occurrences of the word 'a' in the given sentence.
3

Sentence: 'a teddy bear is strapped into a seat'. Count the occurrences of the word 'a' in the given sentence.
2

Sentence: 'a man with a hat riding on a surf board in the water'. Count the occurrences of the word 'water' in the given sentence.

1