instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'a man in a black shirt prepares to catch a frisbee'. Find frequency of the letter 'f'
answer:
1


question:
Sentence: 'a downhill skier with snow plumes behind them'. Find frequency of the letter 'i'
answer:
4


question:
Sentence: 'a kitchen containing a refrigerator and a stove'. Find frequency of the letter 'c'
answer:

2