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 cat with a purple and red collar sitting in a bowl'. Count the occurrences of the word 'a' in the given sentence.

Ex Output:
3


Ex Input:
Sentence: 'a bathroom with a vanity mirror toilette and kitchen sink next to a shower'. Count the occurrences of the word 'a' in the given sentence.

Ex Output:

3