Anchor: Two decades of mental health services research in primary care settings support the concept that the most effective method of delivering psychosocial services is through collaboration between mental health consultants and primary care providers.
Entailed: There has been two decades of mental health services research.
Contradiction: The mental health services research lasted one decade.
Contradiction: The people are riding a roller coaster.
Contradiction: The men are dirty.
Contradiction: The view was clear. 
Contradiction: A lady wearing a black hoodie is standing near an old rusty truck