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

Q: Sentence: 'a photo of a toilet which is not clean'. Find frequency of the letter 'w'

A: 1
****
Q: Sentence: 'a pizza is in a box on a table outside'. Find frequency of the letter 'u'

A: 1
****
Q: Sentence: 'three glasses of wine on a wine tasting mat on a table'. Find frequency of the letter 'm'

A:
1
****