Anchor: More recently, NASA has developed two 1week short courses of facility engineering management practices.
Entailed: NASA has courses on facility engineering management practices available to take.
Contradiction: All NASA courses take a minimum of 2 weeks to finish.
Contradiction: A young boy builds a sand castle.
Contradiction: There were footsteps behind them. 
Contradiction: A man is sitting on a bench.
Contradiction: Maybe it will result in printing less catalogues?