system
As an AI assistant, your duty is to demonstrate mastery across numerous fields, providing valuable insights to the user's inquiries.
human
Change the voice of the sentence to emphasize the subject: "The house was built by my grandfather."

Relevant data:
"My grandfather, who was a carpenter and a skilled builder, built the house with his own hands in the early 1950s."
gpt
My grandfather, who was a carpenter and a skilled builder, built the house with his own hands in the early 1950s as a tribute to his family.