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

[EX Q]: Sentence: 'a bathroom with a toilet and a bath tub'. Count the occurrences of the word 'a' in the given sentence.
[EX A]: 3

[EX Q]: Sentence: 'a man holding a glove on a baseball field'. Count the occurrences of the word 'a' in the given sentence.
[EX A]: 3

[EX Q]: Sentence: 'a man riding skis on a snow covered ski slope'. Count the occurrences of the word 'a' in the given sentence.
[EX A]:
2