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

Sentence: 'a man standing on a white star that is on the floor and he has his hands crossed'. Count the occurrences of the word 'a' in the given sentence.
2

Sentence: 'a hotdog with a bite taken out on a napkin'. Count the occurrences of the word 'a' in the given sentence.
3

Sentence: 'two slices of pizza sitting on a white plate that is on a table'. Count the occurrences of the word 'on' in the given sentence.

2