Anchor: It's worth rummaging through the mass of books, prints, postcards, and periodicals for occasional finds, though the asking prices may seem high.
Entailed: One may occasionally find things when rummaging through the periodicals.
Contradiction: There is no point in rummaging through the mass of books.
Contradiction: boy plays basketball
Contradiction: We are going through the exact same situation.
Contradiction: An old man is walking the neighboorhood.
Contradiction: With the announcement, she stood up in happiness.