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

[Q]: Sentence: 'two giraffes, one standing and one laying down'. Find frequency of the letter 'g'
[A]: 3


[Q]: Sentence: 'a jet flying through the clear blue sky'. Find frequency of the letter 'g'
[A]: 2


[Q]: Sentence: 'a street light that is attached to the side of a building'. Find frequency of the letter 'l'
[A]:
2