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

Q: Sentence: 'a black cat laying down on a bed'. Find frequency of the letter 'y'

A: 1
****
Q: Sentence: 'a plate of food, with broccoli and nuts'. Find frequency of the letter 'b'

A: 1
****
Q: Sentence: 'an old photo with a man on a boat in the water'. Find frequency of the letter 't'

A:
5
****