TASK DEFINITION: In this task, you need to count the number of times the given letter appears in the given sentence.
PROBLEM: Sentence: 'a row of vintage cars in a grassy field'. Find frequency of the letter 'v'

SOLUTION: 1

PROBLEM: Sentence: 'salad and vegetables with me on top of plate'. Find frequency of the letter 'o'

SOLUTION: 3

PROBLEM: Sentence: 'a large bird flying over the water at sunset'. Find frequency of the letter 'a'

SOLUTION:
4