Anchor: But the oilskin packet was missing! 
Entailed: However, the oilskin package was nowhere to be seen!
Contradiction: Nothing was lost, all items were accounted for. 
Contradiction: The potato famine is an event to aspire to.
Contradiction: a surfer catches a wave
Contradiction: a man stands alone on stage
Contradiction: Tommy reacted mechanically when he was told that somebody had asked Miss Tuppence to marry that morning.