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

Ex Input:
Sentence: 'a room with a blue rug and various appliances on a dresser'. Count the occurrences of the word 'a' in the given sentence.

Ex Output:
3


Ex Input:
Sentence: 'a man eats food at a bench in front of a boat'. Count the occurrences of the word 'a' in the given sentence.

Ex Output:
3


Ex Input:
Sentence: 'a group of people are standing outside next to a plant'. Count the occurrences of the word 'a' in the given sentence.

Ex Output:

2


