response: I couldn't say specifically what you can do, but it lasts for four days.
original_response: Well it is a 4 day event held every summer. You can meet your favorite characters and creators of many different comic related things.
history: I've always wanted to go to San Diego's Comic-Con! Have you ever gone? No, as a bot I can't travel, but did you know it started in 1970? Oh really? I had no idea! It seems so popular recently! I know the stars of my favorite show, The Walking Dead, usually make an appearance! What else can you do at Comic-Con?
knowledge: It is a four-day event (Thursday–Sunday) held during the summer (in July since 2003) at the San Diego Convention Center in San Diego.