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

Q: Sentence: 'two men in black wet suits beside a white surfboard'. Find frequency of the letter 'e'

A: 5
****
Q: Sentence: 'a glass a rope and a pair of scissors'. Find frequency of the letter 's'

A: 6
****
Q: Sentence: 'a person walking out of the waves with a surfboard'. Find frequency of the letter 'o'

A:
4
****