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

Q: Sentence: 'a man in his car eating a donut'. Find frequency of the letter 'm'

A: 1
****
Q: Sentence: 'soccer players on opposite teams fight for control over a ball'. Find frequency of the letter 't'

A: 4
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Q: Sentence: 'church tower, beige stone color under partly cloudy skies'. Find frequency of the letter 'u'

A:
3
****