Assertion: gas's hydrogen sulfide | /r/CapableOf | poison worker
Facets:
value: in the surrounding area
type: LOCATION
Source sentences:
text: A valve to a pipe that carried chicken manure, straw and gypsum to the compost fuel for the mushroom growing operation became clogged, and as workers unclogged the valve in a confined space without proper ventilation the hydrogen sulfide that had built up due to anaerobic decomposition of the material was released, poisoning the workers in the surrounding area.