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

Q: Sentence: 'a small white dog looking out a car window'. Find frequency of the letter 'l'

A: 3
****
Q: Sentence: 'two people under an umbrella while walking down a sidewalk'. Find frequency of the letter 'i'

A: 3
****
Q: Sentence: 'young pine trees grow next to a large tree in the woods'. Find frequency of the letter 'e'

A:
8
****