Text: Nearly three months ago, when the administration at the National Autonomous University of Mexico proposed a raise in student tuition from 2 cents to about $150 a year, students closed down the classes with a strike, affecting 267,000 students and 30,000 professors.
Entailment: When a raise in tuition was proposed from 2 cents to about $150 a year, students went on strike.
Contradiction: When a raise in tuition was proposed from 2 cents to about $150 a year, students agreed with the proposition.