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

Example Input: Sentence: 'the large modern bathroom has two sinks and a large tub'. Replace the letter 't' with 'j' in the sentence.
Example Output: jhe large modern bajhroom has jwo sinks and a large jub

Example Input: Sentence: 'a man on a skateboard jumping down a short flight of stairs'. Replace the letter 'o' with 'j' in the sentence.
Example Output: a man jn a skatebjard jumping djwn a shjrt flight jf stairs

Example Input: Sentence: 'people in the park having a picnic with opened umbrellas'. Replace the letter 'e' with 'g' in the sentence.
Example Output:
pgoplg in thg park having a picnic with opgngd umbrgllas