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

Q: Sentence: 'a man flying through the air on a bicycle'. Find frequency of the letter 'u'

A: 1
****
Q: Sentence: 'a woman is taking a sip of a drink from a glass'. Find frequency of the letter 'i'

A: 4
****
Q: Sentence: 'catcher gets face full of dirt after bad throw to home'. Find frequency of the letter 'w'

A:
1
****