Anchor: Only in the 20th century did they start to communicate in English as well.
Entailed: The use of English as a language of communication only came about in the 20th century. 
Contradiction: English was still not in use as a language of communication well into the 21st century/ 
Contradiction: The bride and groom stand alone in the park.
Contradiction: Their marriage took place after he finished his first year of law school.
Contradiction: Everyone was tricked by me.
Contradiction: The people are outside.