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

Q: Sentence: 'a bird in a tree looking up at branches'. Find frequency of the letter 'e'

A: 3
****
Q: Sentence: 'a couple of people are sitting at a table'. Find frequency of the letter 'e'

A: 5
****
Q: Sentence: 'a photograph of a man wearing a woman's hat'. Find frequency of the letter 'p'

A:
2
****