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

[EX Q]: Sentence: 'a young girl is brushing her teeth in this dated photo'. Find frequency of the letter 't'
[EX A]: 5

[EX Q]: Sentence: 'two men with colorful ties are posing for a picture'. Find frequency of the letter 'r'
[EX A]: 4

[EX Q]: Sentence: 'a full food pantry is pictured in this image'. Find frequency of the letter 't'
[EX A]:
3