Anchor: The subsequent power struggle at first split the country into two imperial courts, and then effective control of Japan was splintered for two centuries among scores of daimyo (feudal warlords).
Entailed: The power struggle split Japan into two imperial courts for two centuries. 
Contradiction: The power struggle split Japan into four imperial courts for one century.
Contradiction: Many vendors are performing circus tricks on the street.
Contradiction: The dog has black hair.
Contradiction: One person working on a typewriter.
Contradiction: The girl was on the train.