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

[Q]: Sentence: 'a small dog sits in the rear window of a car'. Find frequency of the letter 'm'
[A]: 1


[Q]: Sentence: 'a river with a long dragon boat in it and rowers on the boat in sets of two, along with two other people'. Find frequency of the letter 'h'
[A]: 4


[Q]: Sentence: 'the boat is anchored beside a nearby bridge'. Find frequency of the letter 'e'
[A]:
6