instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'a dog is shown sitting on rocks by the beach'. Find frequency of the letter 'a'
answer:
2


question:
Sentence: 'a man on stiltz is standing under a pink umbrella'. Find frequency of the letter 's'
answer:
3


question:
Sentence: 'a group of bikers assembles outside of a pizza shop'. Find frequency of the letter 'p'
answer:

3