instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'a man riding his skateboard down low as he turns'. Find frequency of the letter 'g'
answer:
1


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: 'four red double decker passenger buses on a paved surface'. Find frequency of the letter 'e'
answer:

9