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

Ex Input:
Sentence: 'a person on skis standing outside in the snow'. Count the occurrences of the word 'skis' in the given sentence.

Ex Output:
1


Ex Input:
Sentence: 'a man in a red shirt and plaid pants sits on a brown couch and holds a little baby'. Count the occurrences of the word 'a' in the given sentence.

Ex Output:
4


Ex Input:
Sentence: 'a man wearing a jacket and a red flower covered tie'. Count the occurrences of the word 'a' in the given sentence.

Ex Output:

3