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

Sentence: 'a person holding a wine glass in one hand and bread sticks in the other'. Find frequency of the letter 'd'
4

Sentence: 'a couple of items that are on the wall'. Find frequency of the letter 'm'
1

Sentence: 'a bathroom that has a sink and some lights'. Find frequency of the letter 's'

4