Anchor: As the location of the city's greatest historical sites, Old Havana is where you'll want to spend most of your time if it is limited.
Entailed: Old Havana is location of the city's greatest historical sites.
Contradiction: Old Havana is location of the city's worst historical sites.
Contradiction: Three boys are playing with hula hoops
Contradiction: Two people are at a stadium.
Contradiction: I didn't mind going slowly.
Contradiction: He challenged his position as he reigned as King.