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

Sentence: 'a red and yellow striped trailer next to a white obelisk statue in a park'. Count the occurrences of the word 'a' in the given sentence.
3

Sentence: 'a boy holding onto a wii mote by a fireplace'. Count the occurrences of the word 'a' in the given sentence.
3

Sentence: 'a computer keyboard under a laptop keyboard in a darkened room'. Count the occurrences of the word 'a' in the given sentence.

3