In this task, you need to replace a letter in the sentence with another given letter.
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Question: Sentence: 'this is a tennis player getting ready to serve the ball'. Replace the letter 'h' with 'y' in the sentence.

Answer: tyis is a tennis player getting ready to serve tye ball


Question: Sentence: 'a man in black shirt laying on bed with a teddy bear'. Replace the letter 'd' with 'b' in the sentence.

Answer: a man in black shirt laying on beb with a tebby bear


Question: Sentence: 'a white dog wearing a red coat on a sidewalk'. Replace the letter 'w' with 'm' in the sentence.

Answer:
a mhite dog mearing a red coat on a sidemalk