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

Q: Sentence: 'a bunch of green bananas is hanging on a tree'. Find frequency of the letter 'n'

A: 7
****
Q: Sentence: 'there is a woman pointing at something with her dog'. Find frequency of the letter 'i'

A: 5
****
Q: Sentence: 'two women are horseback riding along a beach'. Find frequency of the letter 'a'

A:
5
****