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

Q: Sentence: 'two giraffes standing next to some trees'. Find frequency of the letter 'f'

A: 2
****
Q: Sentence: 'a man in a black wet suit rides an orange surfboard on the water'. Find frequency of the letter 'o'

A: 3
****
Q: Sentence: 'a row of motorcycles with people walking in the background'. Find frequency of the letter 'e'

A:
4
****