Anchor: But I still don't see how he managed to prove his alibi, and yet go to the chemist's shop? Poirot stared at me in surprise. 
Entailed: It's hard to see how he managed to prove his story is true.
Contradiction: He failed dismally to prove his alibi.
Contradiction: The unemployment rate has increased over the years.
Contradiction: A child removes an item from a bag.
Contradiction: The case pending in the US is not causing any complications. 
Contradiction: They worked at Microsoft for quite some time.