Text: Yale law professor and quirky constitutional historian Bruce Ackerman, testifying before the House of Representatives in December, argued that a newly elected Congress has little authority to try an official who was impeached by the previous one.
Entailment: Bruce Ackerman testified before the House of Representatives due to his expertise on the topic of law.
Contradiction: The Yale law professor believed Congress should be able to try an official who was impeached by the previous one.