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

[EX Q]: Sentence: 'a hot dog that is sitting on a plate'. Count the occurrences of the word 'a' in the given sentence.
[EX A]: 2

[EX Q]: Sentence: 'a man with a racket leaps in the air to hit a ball'. Count the occurrences of the word 'racket' in the given sentence.
[EX A]: 1

[EX Q]: Sentence: 'a duck that has just gotten out of a pond'. Count the occurrences of the word 'a' in the given sentence.
[EX A]:
2