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: 'a couple of girls are hanging out at a restaurant'. Find frequency of the letter 'l'

A: 2
****
Q: Sentence: 'two men standing next to a truck full of junk'. Find frequency of the letter 'l'

A:
2
****