Anchor: The practice is common enough that a medical ethicist didn't raise eyebrows at the hospital where I completed my internship when he surveyed residents about how many had placed central lines into comatose or on-the-verge-of-death patients.
Entailed: It's a common practice so many people dont think twice about it
Contradiction: Nobody would try the surgery because nobody has heard of it
Contradiction: A person rides a horse.
Contradiction: Newgrange is a solar observatory.
Contradiction: The Motor Museum was demolished in the year 1985 because people were not interested in their exhibits.
Contradiction:  The Loggia Mosque was built in the 18th century and is now closed.