instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'a fluffy white car looking in a mirror'. Find frequency of the letter 'k'
answer:
1


question:
Sentence: 'a closeup view of a bathroom sink, that is very modern'. Find frequency of the letter 'e'
answer:
4


question:
Sentence: 'a neatly made bed stands by a window'. Find frequency of the letter 'b'
answer:

2