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

[Q]: Sentence: 'a woman sitting in front of a giant slice of cheese pizza'. Find frequency of the letter 'e'
[A]: 4


[Q]: Sentence: 'a herd of horses standing next to each other on a field'. Find frequency of the letter 'r'
[A]: 3


[Q]: Sentence: 'a group of men standing around a table cutting a cake'. Find frequency of the letter 'g'
[A]:
3