Anchor: As a result of the minimal mechanical interface between the sorbent injection system and the boiler, retrofit of an ACI system will typically require a fairly short outage - one week or less.
Entailed: Retrofit of an ACI system required an outage of a week or less. 
Contradiction: Retrofit of an ACI system required an outage of about fifty months due to the large mechanical interface. 
Contradiction: They ignored you.
Contradiction: A women is speaking words in front of a crowd.
Contradiction: The man is swimming in a pool.
Contradiction: The man is holding an instrument.