Text: To provide a conservative estimate of required resources, the following analysis looks at implementing the retrofits for 2005 in 31 months prior to 2005 and retrofits for 2010, 2015, and 2020 three years prior to each five-year period.
Entailment: The analysis looks at implementing retrofits in a 31 month period.
Contradiction: The analysis only looks at how retrofits are removed.