instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'a glass bowl of raw broccoli, a ceramic bowl of raw green chili peppers, and steel bowl of raw daikon'. Find frequency of the letter 'a'
answer:
9


question:
Sentence: 'a lady is standing near a luggage stand at the air port'. Find frequency of the letter 'a'
answer:
9


question:
Sentence: 'a man is standing outside next to a bus'. Find frequency of the letter 'a'
answer:

4