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

Ex Input:
Sentence: 'an image of a man in a suit standing next to a cow'. Count the occurrences of the word 'image' in the given sentence.

Ex Output:
1


Ex Input:
Sentence: 'a black cat is sitting in a pot'. Count the occurrences of the word 'sitting' in the given sentence.

Ex Output:
1


Ex Input:
Sentence: 'a woman is petting a small horse in a field'. Count the occurrences of the word 'a' in the given sentence.

Ex Output:

3