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

Q: Sentence: 'bathroom scene with a black cat going behind the door'. Find frequency of the letter 'e'

A: 4
****
Q: Sentence: 'cars parked outside if a retail store'. Find frequency of the letter 'd'

A: 2
****
Q: Sentence: 'people are loading the top of a bus and other people are standing around watching'. Find frequency of the letter 's'

A:
2
****