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

[EX Q]: Sentence: 'a bear standing on top a piece of pipe with a chain attached'. Count the occurrences of the word 'a' in the given sentence.
[EX A]: 3

[EX Q]: Sentence: 'a man kneeling down next to a suitcase touching his necklace'. Count the occurrences of the word 'a' in the given sentence.
[EX A]: 2

[EX Q]: Sentence: 'a plane that is flying in the air solo'. Count the occurrences of the word 'a' in the given sentence.
[EX A]:
1