However, eleven other workers were killed when they fell from the bridge through the net.
VOA: special.2010.07.23
These included a special safety net under the bridge.
VOA: special.2009.03.04
A special safety net was suspended under the bridge.
VOA: special.2010.07.23
So, for instance a Whistler painting of a bridge may have the obvious keywords such as bridge and Whistler associated to it but will also widen the search net with terms such as aesthetic movement, 19th century and water.