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

Q: Sentence: 'a white toilet sitting next to a bathroom sink'. Find frequency of the letter 'b'

A: 1
****
Q: Sentence: 'a couple of buses parked on the side of the street'. Find frequency of the letter 'b'

A: 1
****
Q: Sentence: 'a close up shows a giraffe by a fence'. Find frequency of the letter 'w'

A:
1
****