Anchor: It marked the ancient border with Nubia to the south and was the conduit for the camel caravan trade in African products such as gold, ivory, and spices.
Entailed: Camels were used to trade goods. 
Contradiction: Africans did not trade gold. 
Contradiction: Merchants had to sail in Egypt in order to transport goods.
Contradiction: a woman is looking at a dog with the group
Contradiction: After rummaging through a dozen or so bags, I got several that I was interested in.
Contradiction: There are two people who hate each other inside.