Anchor: The present-day mobs of tourists buzzing around the souvenir shops of the old town capture something of the medieval frenzy.
Entailed: The current day throngs of tourists hovering by the  souvenir shops represent something close to the medieval frenzy of the past.
Contradiction: The present day mobs are nothing like the medieval frenzy.
Contradiction: The group of people march with signs referencing the recent tax increase.
Contradiction: Two people in headgear stand still.
Contradiction: The Sacramento river sloughs aren't even in California.
Contradiction: I wish that Gates would do more to make a positive lasting impact on the world, since he has the capacity.