Anchor: a group of three middle-aged people hold a conversation.
Entailed: Three people are having a conversation.
Contradiction: A group of three people are swimming.
Contradiction: The zombie was effectively immortal and did not need to worry about being wiped out.
Contradiction: Under these conditions, a single government provider has both advantages and disadvantages.  
Contradiction: The man is making scarfs.
Contradiction: There are government-developed tools.