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

Ex Input:
Sentence: 'several boats parked near the rivers edge letting passengers off'. Count the occurrences of the word 'rivers' in the given sentence.

Ex Output:
1

Ex Input:
Sentence: 'a very distant high up view in the sky of a land mass'. Count the occurrences of the word 'very' in the given sentence.

Ex Output:
1

Ex Input:
Sentence: 'two lounge chairs beneath an umbrella on the sand at the beach'. Count the occurrences of the word 'an' in the given sentence.

Ex Output:
1