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

Q: Sentence: 'several zebras  and a giraffe in an enclosure'. Find frequency of the letter 's'

A: 3
****
Q: Sentence: 'a man pushing a cart full of bananas'. Find frequency of the letter 'u'

A: 2
****
Q: Sentence: 'a castle like bed room that has the era of templar knight similarities'. Find frequency of the letter 'm'

A:
3
****