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

Q: Sentence: 'a dog sitting in the back of a truck flat bed'. Find frequency of the letter 'h'

A: 1
****
Q: Sentence: 'a large cooked pizza on a dining table'. Find frequency of the letter 'n'

A: 3
****
Q: Sentence: 'an american flag waves in front of a clock'. Find frequency of the letter 'i'

A:
2
****