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

[EX Q]: Sentence: 'a piece of film shows two street signs crossing each other'. Find frequency of the letter 'f'
[EX A]: 2

[EX Q]: Sentence: 'a street scene looking at the back of the stop sign'. Find frequency of the letter 't'
[EX A]: 6

[EX Q]: Sentence: 'a blue bus parked in front of a tall building'. Find frequency of the letter 'o'
[EX A]:
2