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

Sentence: 'one wall in the room is flanked by a lovely piece of furniture which displays several object d'art'. Replace the letter 'n' with 'z' in the sentence.
oze wall iz the room is flazked by a lovely piece of furziture which displays several object d'art

Sentence: 'a yellow street sign sitting on the side of a road'. Replace the letter 'a' with 'd' in the sentence.
d yellow street sign sitting on the side of d rodd

Sentence: 'two giraffes in a grassy area next to rock wall and people'. Replace the letter 'l' with 'g' in the sentence.

two giraffes in a grassy area next to rock wagg and peopge