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

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

Sentence: 'a geoup of people on bicycles coming down a street'. Replace the letter 'i' with 'x' in the sentence.
a geoup of people on bxcycles comxng down a street

Sentence: 'a man flying a kite in an open field'. Replace the letter 'k' with 'i' in the sentence.

a man flying a iite in an open field