generate questions: On 30 July 1891, at the age of 35, Tesla became a naturalized citizen of the United States, and established his South Fifth Avenue laboratory, and later another at 46 E. Houston Street, in New York. He lit electric lamps wirelessly at both locations, demonstrating the potential of wireless power transmission. In the same year, he patented the Tesla coil.
How old was tesla when he became a US citizen? {sep_token} Where was Tesla's laboratory established? {sep_token} What did he light at his laboratories to demonstrate his wireless power transmission? {sep_token} what did he patent in 1891? {sep_token} When did Tesla get his US citizenship? {sep_token} What did Tesla patent in 1891? {sep_token} How old was Tesla when he became a citizen of the US? {sep_token} What sort of power transmission did Tesla show off at his labs? {sep_token}