Problem: Does "These are largely managed by the Defence Infrastructure Organisation." answer the question "What percentage of the defence estate makes up training areas and ranges?"

A: no

Problem: Does "Because of this some of their salts have the same crystal structure and in circumstances where ionic radius is a determining factor zinc and magnesium chemistries have much in common." answer the question "What is the determining factor where zinc and magnesium are very similar chemically?"

A: yes

Problem: Does "Tumon Bay has since been made into a preserve." answer the question "What has Guam recently being trying to protect?"

A:
no