instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'a group of cows that are standing in the grass'. Find frequency of the letter 'g'
answer:
3


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


question:
Sentence: 'a clock that is next to an eagle statue'. Find frequency of the letter 'e'
answer:

4