instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'man sitting on the side of a van playing the guitar'. Find frequency of the letter 'm'
answer:
1


question:
Sentence: 'a doll with huge eyes and black hair with blunt bangs holds a red umbrella'. Find frequency of the letter 'e'
answer:
5


question:
Sentence: 'a young man on a skateboard in mid air'. Find frequency of the letter 'a'
answer:

6