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

Q: Sentence: 'town clocks affixed to a tall, brick building'. Find frequency of the letter 'r'

A: 1
****
Q: Sentence: 'an elephant with broken tusks stands in front of a hill and boulders'. Find frequency of the letter 'n'

A: 7
****
Q: Sentence: 'there are people looking at a booth and a woman and man in a wheelchair on the sidewalk'. Find frequency of the letter 'e'

A:
9
****