<prompt> Pedzisa mutsara unotevera:  <response>: Muna 1904, paSt. Louis Worlds Fair, Lewis akaita kuti chiedza chikuru kupfuura zvose checarbon arc chiiswe pamusoro pedumba, mamita 45 pamusoro pomugwagwa. Chiedza chematani masere, chemainch 80 chakavakwa neGeneral Electric muna 1903, mwenje wokutsvaka wakabudisa simba remwenje rinenge bhiriyoni rimwe. Mwenje wacho une kabhoni kanosvika mamita manomwe kanovheneka chivhenekerwa nemapuranga ecarbon uye kanoratidzwa mugirazi rakatsikwa rinoita kuti chiedza chiwedzere. 