Anchor: Business executives keep in mind that initial CIO models adopted should not be set in stone, but may have to be adjusted over time as their enterprises grow or mature.
Entailed: Business executives believe that initial CIO models are not set in stone and may need to be changed over time as their businesses grow.
Contradiction: Business executives believe that the initial CIO models should always be set in stone. 
Contradiction: The weather on Tuesday will be sunny.
Contradiction: A group of people wait outdoors.
Contradiction: A child is running a marathon.
Contradiction: An old street musician watches young pedestrians walk by.