Anchor: Four dogs running over snow covered grass.
Entailed: A group of animals run outdoors.
Contradiction: A group of four dogs sleep soundly indoors.
Contradiction: He stopped before he got to the brill fields. 
Contradiction: Some dogs are outside.
Contradiction: My husband is completely tone deaf.
Contradiction: Doctors may be able to use the Internet and microscopic sensors to have consultations with their patients.