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

Sentence: 'a person jumping up in the air on a snowboard'. Replace the letter 'r' with 'o' in the sentence.
a peoson jumping up in the aio on a snowboaod

Sentence: 'a red train moves over snowy rail road tracks'. Replace the letter 'v' with 'w' in the sentence.
a red train mowes ower snowy rail road tracks

Sentence: 'an elephants head has been photo-shopped onto a falcon'. Replace the letter 'p' with 'r' in the sentence.

an elerhants head has been rhoto-shorred onto a falcon