instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'a woman walking with a child that is in a wheelchair'. Find frequency of the letter 'k'
answer:
1


question:
Sentence: 'a bunch of cows that are in the field'. Find frequency of the letter 'a'
answer:
3


question:
Sentence: 'two retro school buses parked behind one another'. Find frequency of the letter 'd'
answer:

2