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

Sentence: 'an older red airplane is going straight up'. Replace the letter 'h' with 'z' in the sentence.
an older red airplane is going straigzt up

Sentence: 'a red train sitting at an empty station'. Replace the letter 'i' with 'h' in the sentence.
a red trahn shtthng at an empty stathon

Sentence: 'a commercial kitchen with an assortment of equipment'. Replace the letter 'i' with 's' in the sentence.

a commercsal kstchen wsth an assortment of equspment