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

Ex Input:
Sentence: 'a small bird perched on a branch in a tree'. Count the occurrences of the word 'a' in the given sentence.

Ex Output:
3


Ex Input:
Sentence: 'a man riding a long surfboard on a wave'. Count the occurrences of the word 'a' in the given sentence.

Ex Output:
3


Ex Input:
Sentence: 'a boys soccer game with one player from a team going after the ball as another player from a different team also pursues the ball'. Count the occurrences of the word 'with' in the given sentence.

Ex Output:

1