instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'a herd of giraffe walking across a field'. Find frequency of the letter 'k'
answer:
1


question:
Sentence: 'a person is water skiing and there are birds flying around above them'. Find frequency of the letter 'n'
answer:
5


question:
Sentence: 'a black and white furry cat setting next to a green tiles bathtub'. Find frequency of the letter 'n'
answer:

4