Riddle: A farmer has twenty sheep, ten pigs, and ten cows. If we call the pigs cows, how many cows will he have?
Answer: Ten Cows. We can call the pigs cows but it doesn't make them cows.
Source: https://www.riddles.com/index.php/5577
A farmer has twenty sheep, ten pigs, and ten cows riddle by Year of the Pig Riddles Riddle