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

[EX Q]: Sentence: 'a crowd watches as giraffes graze the tree tops at the zoo'. Replace the letter 't' with 'q' in the sentence.
[EX A]: a crowd waqches as giraffes graze qhe qree qops aq qhe zoo

[EX Q]: Sentence: 'a bathroom that has a sink and a toilet'. Replace the letter 's' with 'a' in the sentence.
[EX A]: a bathroom that haa a aink and a toilet

[EX Q]: Sentence: 'a group of people on a skii slope skiing'. Replace the letter 'u' with 'x' in the sentence.
[EX A]:
a groxp of people on a skii slope skiing