Q: Does "Alloying a metal is done by combining it with one or more other metals or non-metals that often enhance its properties." provide a valid answer to "What can be done to a metal to enhance its properties?"?
A: yes

Q: Does "Although a reading supported by the majority of witnesses is frequently preferred, this does not follow automatically." provide a valid answer to "Why would someone prefer a second edition to a first edition?"?
A: no

Q: Does "When authorized, he activated a combined U.S. Army and Marine Corps, and ROK Army force." provide a valid answer to "Who coordinated the efforts of the ROK Army, Marine Corps and the US Army to stage a successful battle?"?
A: no

Q: Does "In this governmental structure, each component has some level of sovereignty over itself." provide a valid answer to "What does each greater level of assembly have?"?
A:
no