Anchor: Potato and sugar crops were also badly affected during this period.
Entailed: At that time, both potato and sugar crops had lower yields.
Contradiction: Potato and sugar crops had bumper yields during this period.
Contradiction: Cross-ownership still exists today.
Contradiction: I was feeling much more sure of Poirot's powers of investigation since he had vindicated Alfred Inglethorp of the crime. 
Contradiction: Jed Perl praised the new J. Paul Getty Museum in a recent article.
Contradiction: Two girls toss their guns in the air.