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

Q: Sentence: 'a person that is looking out his window'. Find frequency of the letter 'n'

A: 3
****
Q: Sentence: 'a person riding a camel in front of a truck'. Find frequency of the letter 't'

A: 2
****
Q: Sentence: 'a tall giraffe is in an enclosure by the grass'. Find frequency of the letter 'y'

A:
1
****