Premise: Starting in 2008 for sulfur dioxide and nitrogen oxides and in 2010 for mercury, the owner or operator of a facility that fails to hold allowances covering the annual emissions of its affected units is treated as having excess emissions.

Hypothesis: Starying in 2017 for mercury, the operator or owner of a facility that fails to hold allowances covering the annual emissions of its affected units is treated as having perfect emissions.
Relation: contradiction