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

Q: Sentence: 'pedestrian in stripe clothing standing on street corner'. Find frequency of the letter 's'

A: 4
****
Q: Sentence: 'a woman sitting in front of a giant slice of cheese pizza'. Find frequency of the letter 'e'

A: 4
****
Q: Sentence: 'a tall blue woman standing next to a  surfboard'. Find frequency of the letter 'o'

A:
3
****