TASK DEFINITION: In this task, you need to count the number of times the given letter appears in the given sentence.
PROBLEM: Sentence: 'a teddy bear is sitting on a heart shaped patio chair outside'. Find frequency of the letter 'i'

SOLUTION: 6

PROBLEM: Sentence: 'a woman is looking at sheep off in a field'. Find frequency of the letter 'm'

SOLUTION: 1

PROBLEM: Sentence: 'a toilet on the curb or a city street, filled with paper'. Find frequency of the letter 'h'

SOLUTION:
2