Anchor: It is currently unknown whether there is a time lag -- a delay between changes in PM exposures and changes in mortality rates -- in the chronic PM/mortality relationship.
Entailed: It is unknown if there is a time lag.
Contradiction: A time lag is known.
Contradiction: The Social Security system is not in need of reformation and these new proposals are a waste of tax payers time and money.
Contradiction: Exposure to fine particulate matter can affect human health.
Contradiction: The man is wearing white.
Contradiction: A snowboarder has successfully launched into the air.