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

Ex Input:
Sentence: 'a flat screen tv sitting in the corner of a living room next to a pumpkin'. Count the occurrences of the word 'a' in the given sentence.

Ex Output:
3


Ex Input:
Sentence: 'a man standing in the doorway of a bus traveling down the road'. Count the occurrences of the word 'the' in the given sentence.

Ex Output:
2


Ex Input:
Sentence: 'a table set with plates and a cat'. Count the occurrences of the word 'a' in the given sentence.

Ex Output:

2