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

Q: Sentence: 'two people wearing snowboards sitting on a snowy slope'. Find frequency of the letter 's'

A: 5
****
Q: Sentence: 'a bird is perched on a container in a person's hand'. Find frequency of the letter 'c'

A: 2
****
Q: Sentence: 'a double decker bus traveling down a city street'. Find frequency of the letter 'd'

A:
3
****