Anchor: This struggle between the marvelous and the murderous, as Seamus Heaney has put it, is still acute in modern Irish poetry.
Entailed: Seamus Heaney identifies a struggle between marvel and murder in modern Irish poetry. 
Contradiction: Seamus sees no struggles within contemporary Irish poetry. 
Contradiction: It surely is.
Contradiction: A person is climbing a rock wall.
Contradiction: A woman is mending a dress.
Contradiction: I will soon have an Amiga as a desktop computer.