Wikipedia® is a multilingual, web-based, free encyclopedia based on a model of openly editable and viewable content. It is the largest and most popular general reference work on the World Wide Web.

  Answering everything there is to everything.
    ᴡɪᴋɪᴘᴇᴅɪᴀ, ᴛʜᴇ ғʀᴇᴇ ᴇɴᴄʏᴄʟᴏᴘᴇᴅɪᴀ