instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'there are two men sitting on a couch playing video games'. Find frequency of the letter 'v'
answer:
1


question:
Sentence: 'a teenager witting on a futon couch holding gaming controls in both hands'. Find frequency of the letter 'c'
answer:
3


question:
Sentence: 'a gray cat sitting on a desk looking into a mirror'. Find frequency of the letter 'k'
answer:

2