Anchor: This paper explores the reasons that underlie differences in delivery costs among geographic areas.
Entailed: There are reasons that delivery costs differ between areas.
Contradiction: Deliveries have identical costs in all geographic areas.
Contradiction: Equal access to the court system is not particularly important. 
Contradiction: School children are walking home.
Contradiction: Weaknesses are almost always overlooked by the marketplace. 
Contradiction: There were mainly clear situations but there were a feel not so clear.