If toxic waste containg cyanide is not disposed of properly, it may drain into ponds, streams, sewers, and reservoirs.
Ponds, streams, sewers, and reservoirs never come into contact with Toxic waste.
( z1 contact :polarity - :ARG0 ( z2 and :op ( z3 pond ) :op ( z4 stream ) :op ( z5 sewer ) :op ( z6 reservoir ) ) :ARG1 ( z7 waste :mod ( z8 toxic ) ) :time ( z9 ever ) )