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

[Q]: Sentence: 'there is a stop sign that has a reflection in a puddle'. Find frequency of the letter 'e'
[A]: 5


[Q]: Sentence: 'a blue bowl holding mashed bananas and oatmeal with a bottle of sugar and cinnamon sitting beside it'. Find frequency of the letter 'g'
[A]: 3


[Q]: Sentence: 'two pieces of pizza are on paper plates'. Find frequency of the letter 'e'
[A]:
5