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

Q: Sentence: 'a man standing in front of a statue near a metal pole'. Find frequency of the letter 'f'

A: 2
****
Q: Sentence: 'an area that has surrounded by a metal fence'. Find frequency of the letter 'o'

A: 1
****
Q: Sentence: 'a person in a field with a number of sheep'. Find frequency of the letter 'b'

A:
1
****