instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'the small black and white dog holds onto a frisbee'. Find frequency of the letter 'h'
answer:
3


question:
Sentence: 'a close up of a bird on the outside window sill'. Find frequency of the letter 'c'
answer:
1


question:
Sentence: 'a graffiti filled restroom with three urinals and a toilet'. Find frequency of the letter 'f'
answer:

3