instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
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 bird on a tree is flapping its wings'. Find frequency of the letter 'o'
answer:
1


question:
Sentence: 'a blurry view of trucks in an airport beside an airplane'. Find frequency of the letter 'a'
answer:

6