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

[EX Q]: Sentence: 'a commuter bus in england by a clock tower building'. Find frequency of the letter 'w'
[EX A]: 1

[EX Q]: Sentence: 'there is a zebra that is walking enar a car'. Find frequency of the letter 'r'
[EX A]: 4

[EX Q]: Sentence: 'the sides of a black and white screen or object'. Find frequency of the letter 'e'
[EX A]:
6