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

Q: Sentence: 'a stop sign near a rail road crossing sign'. Find frequency of the letter 'g'

A: 3
****
Q: Sentence: 'a red stop sign with street signs above it'. Find frequency of the letter 't'

A: 5
****
Q: Sentence: 'a little girl using a smart phone while sitting on a chair'. Find frequency of the letter 't'

A:
5
****