Text: It must be, said Tommy coldly, "if you can come over here in love with one girl, and propose to another within a fortnight." Julius had the grace to look discomposed.
Entailment: According to Tommy, it must be, if Julius can come over here in love with one girl, and propose to another within a fortnight.
Contradiction: It must not be, said Tommy coldly, 'if you can come over here in love with one girl, and never look at another again'.