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

Q: Sentence: 'silhouette of person playing frisbee with moutain and sunset'. Find frequency of the letter 'i'

A: 5
****
Q: Sentence: 'a row of vintage cars in a grassy field'. Find frequency of the letter 'v'

A: 1
****
Q: Sentence: 'carts full of luggage on open walkway in terminal'. Find frequency of the letter 'e'

A:
3
****