Anchor: As any 10-year-old knows (and game theorists can now elaborately prove), three-person secrets are particularly troublesome in this regard, because nobody can ever pinpoint which of the other two might have cheated.
Entailed: Three-person secrets have been elaborately proven by game theorists to be particularly troublesome. 
Contradiction: Three-person secrets, while seen to be troublesome by 10-year-olds, have yet to be proven so by any scientific community. 
Contradiction: I haven't seen Boris Something since.
Contradiction: The child is playing with Legos.
Contradiction: A man is kidnapping a child and smiling.
Contradiction: The most remote island southeast of Skiathos Skyroseas experiences very little tourism each year.