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

Q: Sentence: 'a bus is stopped in front of a graphic statue'. Find frequency of the letter 'e'

A: 2
****
Q: Sentence: 'a train going over a bridge with some buildings in the background'. Find frequency of the letter 'd'

A: 3
****
Q: Sentence: 'there is a toilet sitting in a park'. Find frequency of the letter 's'

A:
2
****