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

[EX Q]: Sentence: 'a view of a sandwich with a side salad'. Count the occurrences of the word 'a' in the given sentence.
[EX A]: 3

[EX Q]: Sentence: 'a dog under a dog bed on a white background'. Count the occurrences of the word 'a' in the given sentence.
[EX A]: 3

[EX Q]: Sentence: 'a train is stopped at a station beside a traffic signal'. Count the occurrences of the word 'a' in the given sentence.
[EX A]:
3