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

Sentence: 'an old glass vase containing flowers on a glass table'. Find frequency of the letter 'b'
1

Sentence: 'a  woman standing next to a man on a motorcycle in front of a market'. Find frequency of the letter 'l'
1

Sentence: 'there is a clock tower in the city'. Find frequency of the letter 'l'

1