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

Q: Sentence: 'a construction sign is displayed on a street'. Find frequency of the letter 'i'

A: 4
****
Q: Sentence: 'a line of people on motorcycles on the road'. Find frequency of the letter 'e'

A: 5
****
Q: Sentence: 'an adolescent boy sits on the couch holding a controller'. Find frequency of the letter 'l'

A:
4
****