instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'a social occasion of people are uncovered before the open day'. Find frequency of the letter 'c'
answer:
4


question:
Sentence: 'the small black and white dog holds onto a frisbee'. Find frequency of the letter 'h'
answer:
3


question:
Sentence: 'a pile of random vegetables all over the floor'. Find frequency of the letter 'l'
answer:

5