TASK DEFINITION: In this task, you need to count the number of times the given letter appears in the given sentence.
PROBLEM: Sentence: 'a man riding a skateboard up the side of a ramp'. Find frequency of the letter 'u'

SOLUTION: 1

PROBLEM: Sentence: 'a person riding a camel in front of a truck'. Find frequency of the letter 't'

SOLUTION: 2

PROBLEM: Sentence: 'buildings next to people on street and various canopies'. Find frequency of the letter 's'

SOLUTION:
4