In this task, you need to replace a letter in the sentence with another given letter.

Sentence: 'two cats sitting on an office chair next to a desk'. Replace the letter 's' with 'j' in the sentence.
two catj jitting on an office chair next to a dejk

Sentence: 'a train moving on a track during the day'. Replace the letter 't' with 'q' in the sentence.
a qrain moving on a qrack during qhe day

Sentence: 'a boy with an orange bat swings at the ball'. Replace the letter 'i' with 'z' in the sentence.

a boy wzth an orange bat swzngs at the ball