Anchor: We would need to assure ourselves, however, that case studies whose results we are going to use have adopted the same procedures for ensuring impartiality.
Entailed: Whether or not case studies whose results we are going to use have adopted the same procedures for ensuring impartiality, is something we need assurance for.
Contradiction: Whether or not case studies whose results we are going to use have adopted the same procedures for ensuring impartiality, is something we can neglect.
Contradiction: I am not bothering to think about the matter any further.
Contradiction: I don't prefer to poison you. 
Contradiction: A man is yelling at his wife.
Contradiction: A man is outdoors.