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

Q: Sentence: 'a woman walking on a shore next to a river'. Find frequency of the letter 'v'

A: 1
****
Q: Sentence: 'the large modern train is on the train track'. Find frequency of the letter 'm'

A: 1
****
Q: Sentence: 'someone is doing something that is extremely fun'. Find frequency of the letter 'g'

A:
2
****