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

Q: Sentence: 'three young people goofing around; one of the guys has a football, the girl has a teddy bear'. Find frequency of the letter 'd'

A: 3
****
Q: Sentence: 'a woman with short, brown hair is looking into a circular mirror and holding a camera up to her cheek'. Find frequency of the letter 'e'

A: 4
****
Q: Sentence: 'this boy is waiting to swing a baseball bat'. Find frequency of the letter 't'

A:
4
****