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

Q: Sentence: 'a dilapidated bench in a park under a tree'. Find frequency of the letter 'p'

A: 2
****
Q: Sentence: 'a photo of a toilet which is not clean'. Find frequency of the letter 'w'

A: 1
****
Q: Sentence: 'a train is comign down the trakc with people in the last wagon'. Find frequency of the letter 'o'

A:
4
****