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

Q: Sentence: 'soccer players on opposite teams fight for control over a ball'. Find frequency of the letter 't'

A: 4
****
Q: Sentence: 'a group of men standing on the side of a boat'. Find frequency of the letter 'o'

A: 5
****
Q: Sentence: 'a group of people skiing down a snow covered slope'. Find frequency of the letter 'w'

A:
2
****