Anchor: But I wondered how he, a surgeon, could spend an hour meeting with me at the spur of the moment.
Entailed: It was curious that the surgeon could meet with me for an hour on a moment's notice.
Contradiction: It was curious that the surgeon couldn't meet with me for an hour with a month's notice.
Contradiction: They run in a field
Contradiction: Due to the progress of technology, natural selection has slowed.
Contradiction: A group of horses are sleeping.
Contradiction: If an employee is arrested the form loses their entire investment in them.