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

Q: Sentence: 'a dog is shown sitting on rocks by the beach'. Find frequency of the letter 'a'

A: 2
****
Q: Sentence: 'a person dressed all in black snowboarding down a slope'. Find frequency of the letter 'e'

A: 4
****
Q: Sentence: 'two bears laying together out on the grass'. Find frequency of the letter 't'

A:
5
****