Anchor: In the studies with the freshwater organisms, the water hardness for five of the six laboratories ranged between 36 and 75 mg/L.
Entailed: The range of water hardness was 36 to 75 mg/L.
Contradiction: Water hardness was found to not vary much between the laboratories.
Contradiction: The visitor was nothing particular to look at and was quite invisible. 
Contradiction: Photos are being taken of people.
Contradiction: Tourists are in Scandanavia.
Contradiction: The EPA resubmitted all eight requests.