Problem: Does "Numerous Roman sites are scattered around present-day Portugal, some urban remains are quite large, like Conimbriga and Mirobriga." answer the question "What are castros?"

A: no

Problem: Does "Chief among these is maize or "corn", arguably the most important crop in the world." answer the question "Who do we owe gratitude for even some species of cotton to?"

A: no

Problem: Does "The bishop, for example dammed the Kromme Rijn at Wijk bij Duurstede to protect his estates from flooding." answer the question "What Industry did the bishop hurt"

A:
yes