Anchor: Thus it came about that, three days later, I descended from the train at Styles St. Mary, an absurd little station, with no apparent reason for existence, perched up in the midst of green fields and country lanes. 
Entailed: There was no reason for there to be a station at Styles St. Mary.  
Contradiction: The station at Styles St. Mary had a purpose for its existence.  
Contradiction: Original certification never requires submitting a device for testing.
Contradiction: The men are arguing.
Contradiction: A boy is swimming.
Contradiction: Limes (the citrus fruit) and chestnuts grow on trees.