Anchor: Someone must have said some pretty dangerous health spells over him then." He turned to Dave, as if aware that the other was comparatively ignorant of such matters.
Entailed: He must have had a health spell put over him.
Contradiction: There's no way that anyone said a health spell powerful enough to put him in danger.
Contradiction: People are playing hockey.
Contradiction: It seems like they do not smell as bad.  
Contradiction: Soccer players are walking on a field that is currently exploding.
Contradiction: It is the perfect way for a visitor to get to the places on the outskirts.