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

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

[EX Q]: Sentence: 'a pizza with sauce and very little cheese arranged on a table'. Count the occurrences of the word 'a' in the given sentence.
[EX A]: 2

[EX Q]: Sentence: 'a woman holding a child are looking at a cow over a fence'. Count the occurrences of the word 'a' in the given sentence.
[EX A]:
4