Anchor: More and more ports were opened to foreign trade, and the Japanese were obliged to accept low import tariffs.
Entailed: The Japanese were obliged to accept low import tariffs after more ports were opened to foreign trade.
Contradiction: The Japanese did not accept the tariffs after more ports were opened.
Contradiction: A group of people running a marathon to the finish.
Contradiction: Start with an planned tour of the city through a travel agency.
Contradiction: No sites have ever gone bad.
Contradiction: A meeting of people is taking place