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

Sentence: 'a picture of a medical exam room with a bed and chair'. Count the occurrences of the word 'a' in the given sentence.
3

Sentence: 'a surfer wearing a green shirt holds his surf board and looks out at the boats in the ocean'. Count the occurrences of the word 'a' in the given sentence.
2

Sentence: 'a wall has a plaque with a city and numbers on it'. Count the occurrences of the word 'numbers' in the given sentence.

1