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

[Q]: Sentence: 'a picture of a vase with pink flowers in it'. Count the occurrences of the word 'a' in the given sentence.
[A]: 2


[Q]: Sentence: 'a man with a long grey beard in a white shirt and green tie at a pub full of greenshirted patrons'. Count the occurrences of the word 'a' in the given sentence.
[A]: 4


[Q]: Sentence: 'a large bathroom with a soaking tub and walk in shower'. Count the occurrences of the word 'a' in the given sentence.
[A]:
2