Anchor: (1996) study, one corresponding to all-cause mortality, and one corresponding to chronic obstructive pulmonary disease (COPD) mortality (separation by cause is necessary to implement the life years lost approach detailed below).
Entailed: There was a study about the mortality rate for those with COPD.
Contradiction: COPD is not fatal.
Contradiction: the kids went iceskating
Contradiction: There is a convent and church around the chapel.
Contradiction: People walk down a brick street.
Contradiction: Key steps are in figure 1