In this task, you need to count the occurrences of the given word in the given sentence.
--------
Question: Sentence: 'she was walking down the side walk with her umbrella open'. Count the occurrences of the word 'down' in the given sentence.

Answer: 1


Question: Sentence: 'a boat carries a smaller motorboat that is hitched on the back'. Count the occurrences of the word 'a' in the given sentence.

Answer: 2


Question: Sentence: 'a man on a skateboard in the air doing a trick'. Count the occurrences of the word 'a' in the given sentence.

Answer:
3