Anchor: But you have just said it was a whole week since the crime. 
Entailed: You just confirmed that it was 7 days since the crime.
Contradiction: You said it was 10 days since the crime.
Contradiction: Rowboats go gently down the stream.
Contradiction: The girl is riding her bike.
Contradiction: There is no risk involved in unraveling the dinstinctions.
Contradiction: A man is standing next to machines.