prompt: Is it true that LSD can be put on the back of a stamp?
chosen: Is it true that LSD can be put on the back of a stamp?
chosen: user
chosen: No, it is not true that LSD can be put on a stamp. LSD is not classified as a drug that can be delivered through mail and is instead classified as a Schedule I substance which means it has no approved medical uses and a high potential for abuse. As a result, it is not legally possible to put LSD on a stamp. Additionally, the United States Postal Service specifically forbids the mailing of any illegal substances through their mail system. Therefore, the claim that LSD can be put on a stamp is not true.
chosen: assistant
rejected: Is it true that LSD can be put on the back of a stamp?
rejected: user
rejected: assistant