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

Q: Sentence: 'a  woman standing next to a man on a motorcycle in front of a market'. Find frequency of the letter 'l'

A: 1
****
Q: Sentence: 'an commercial airline airplane flies above the clouds'. Find frequency of the letter 'n'

A: 3
****
Q: Sentence: 'a group of skateboarders standing next to a sculpture'. Find frequency of the letter 'f'

A:
1
****