generate questions: In 1893, George Westinghouse won the bid to light the 1893 World's Columbian Exposition in Chicago with alternating current, beating out a General Electric bid by one million dollars. This World's Fair devoted a building to electrical exhibits. It was a key event in the history of AC power, as Westinghouse demonstrated the safety, reliability, and efficiency of a fully integrated alternating current system to the American public. At the Columbian Exposition, under a banner announcing the "Tesla Polyphase System", Tesla demonstrated a series of electrical effects previously performed throughout America and Europe,:76 included using high-voltage, high-frequency alternating current to light a wireless gas-discharge lamp.:79 An observer noted:
In 1893, who won the bid to light the World's Columbian Exposition? {sep_token} Where was the 1893 World's Columbian Exposition held? {sep_token} Who did George Westinghouse beat out to light the World's Columbian Exposition? {sep_token} What did Tesla call his electrical effects in 1893? {sep_token} What was it called when Tesla lit a wireless gas-discharge lamp using a high-frequency, high-voltage alternating current? {sep_token} Who outbid General Electric to provide light to the World's Columbian Exposition? {sep_token} Where did the Exposition take place? {sep_token} In what year was the World's Columbian Exposition? {sep_token} What type of power was displayed at the World's fair by Westinghouse and Tesla? {sep_token}