Anchor: A man helps a girl get up on a turquoise surfboard.
Entailed: Someone is learning to surf.
Contradiction: There is only one black surfboard.
Contradiction: We are entering a new era of safe air travel.
Contradiction: The book of Ezekial in the bible describes flying vehicles. 
Contradiction: The children are inside watching TV.
Contradiction: Fixed costs are pegged to postal density.