The couch across the room catches fire, although no other source of fire has touched it. (discovermagazine.com)
Also in 1959, the combination of these grids with sources of fire (candles, gas - burners) produced smoke - traces and fire paintings, in which the paint was burnt. (en.wikipedia.org)
The crew of a NAF Intelligence, Surveillance and Reconnaissance (ISR) aircraft established contact with the ground troops and guided the Alpha Jet aircraft crew to the major source of fire from the BHTs, which was seen coming from a particular settlement. (securitykingng.org)