Anchor: In studies with the marine organisms, only one LC50 (presumably the combined LC50 from duplicate tests) was reported for each toxicity test.
Entailed: One LC50 was delivered to be tested for toxicity. 
Contradiction: The study also investigated land animals living near the sea for toxicity levels.
Contradiction: Slate never published the E-Mail I sent to the Editors.
Contradiction: A young man is drinking alcohol.
Contradiction: The two men fight over the keyboard
Contradiction: People are looking at the wonderful site.