Anchor: But it is not premature to begin thinking of Dolly's ovine progenitor not so much as a sheep--or even as product--but, in some sense, as content.
Entailed: Dolly has an ovine progenitor.
Contradiction: Dolly doesn't have an ovine progenitor.
Contradiction: There were no stairs in that building because it was constructed on only one level.
Contradiction: They traveled up an empty drive.  
Contradiction: Four people are standing around the Legos outdoor booth.
Contradiction: A lady guides the wheelchair.