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

Ex Input:
Sentence: 'a group of people in a field flying kites'. Count the occurrences of the word 'a' in the given sentence.

Ex Output:
2


Ex Input:
Sentence: 'a red apple sitting on a wooden table with two knifes going through it'. Count the occurrences of the word 'with' in the given sentence.

Ex Output:
1


Ex Input:
Sentence: 'a man rides his skateboard down a hill'. Count the occurrences of the word 'a' in the given sentence.

Ex Output:

2