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

[Q]: Sentence: 'a gourmet looking hamburger with fries on a dining table with some wine'. Find frequency of the letter 't'
[A]: 4

[Q]: Sentence: 'a couple of people that are on a baseball field'. Find frequency of the letter 'c'
[A]: 1

[Q]: Sentence: 'a man riding a horse down the beach at sunset'. Find frequency of the letter 'i'
[A]:
2