Text: Based on these timelines, it is estimated that, in principle, the mercury controls needed to comply with a multipollutant strategy can be met provided that (1) an adequate supply of materials and labor is available and (2) the control technology implementation process begins at least 16 months prior to the date controls must be in place.
Entailment: There are 2 stated conditions under which the mercury controls can be provided.
Contradiction: The mercury controls cannot be provided under any conditions.