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

Sentence: 'a woman sitting at a table holding a hot dog up to her mouth'. Count the occurrences of the word 'a' in the given sentence.
3

Sentence: 'a black train is on a train track near some foothills'. Count the occurrences of the word 'a' in the given sentence.
2

Sentence: 'a man laying in a bed with a lot of stuff on it facing the closet'. Count the occurrences of the word 'a' in the given sentence.

3