Assertion: plague's presence | /r/CapableOf | cast doubt
Facets:
value: on the theory of chemical contamination
type: OTHER
Source sentences:
text: The presence of these deformities in both natural and man-made bodies of water cast doubt on the theory of chemical contamination, as the larger, natural lakes should not have been as susceptible to harboring high concentration of pollutants as smaller, man-made agricultural ponds.