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

[EX Q]: Sentence: 'a woman in yellow dress standing next to a horse'. Find frequency of the letter 'l'
[EX A]: 2

[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: 'a group of people standing and sitting around a living room'. Find frequency of the letter 'u'
[EX A]:
2