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

Q: Sentence: 'flower in a vase full of water sitting on a stand '. Find frequency of the letter 'l'

A: 3
****
Q: Sentence: 'two zebras standing around while a third zebra drinks from a pond'. Find frequency of the letter 's'

A: 3
****
Q: Sentence: 'a black cat laying down on a bed'. Find frequency of the letter 'y'

A:
1
****