In this task, you need to count the number of times the given letter appears in the given sentence.

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


[Q]: Sentence: 'a stuffed animal sitting on an empty bed'. Find frequency of the letter 'u'
[A]: 1


[Q]: Sentence: 'a ceramic vase has flowers painted on it'. Find frequency of the letter 'e'
[A]:
4