TASK DEFINITION: In this task, you need to count the number of times the given letter appears in the given sentence.
PROBLEM: Sentence: 'a castle like bed room that has the era of templar knight similarities'. Find frequency of the letter 'm'

SOLUTION: 3

PROBLEM: Sentence: 'a group of people are playing soccer on a beach'. Find frequency of the letter 'l'

SOLUTION: 2

PROBLEM: Sentence: 'a couple of motor bikes on the side of the street'. Find frequency of the letter 'd'

SOLUTION:
1