Anchor: However, the relative roles of PM exposure duration and PM exposure level in inducing premature mortality remain unknown at this time.
Entailed: It is not currently known what roles duration and level of PM exposure play in relation to each other in premature death.
Contradiction: A high duration of exposure to PM relative to a relatively low level of exposure is known to induce premature mortality, and this has been explained in numerous studies.
Contradiction: a man fishing
Contradiction: A person licks her plate and fork clean at the end of a meal.
Contradiction: a man steals some shirts
Contradiction: His death took place in the year 1990.