Anchor: How do you know?" I told him of Poirot's intense excitement on hearing that Dr. 
Entailed: I informed him about Poirot's high level of excitement.
Contradiction: I told him about how Poirot was so intensely bored.
Contradiction: I work at an engineering company as a consultant.
Contradiction: The woman held a lamp.
Contradiction: Decreasing the relative price of USPS postal delivery services. 
Contradiction: I witnessed it myself.