Does "United Nations forces had previously retreated in the face of large Communist forces instead of getting cut off, but this time they stood and fought at odds of roughly 15 to 1." contain the correct answer to "How many PVA soldiers fought in this battle and lost?"
OPTIONS:
- yes
- no

A: no

Does "After a new wave of UN sanctions, on 11 March 2013, North Korea claimed that it had invalidated the 1953 armistice." contain the correct answer to "Why is North Korea insisting that the 1953 armistice was violated?"
OPTIONS:
- yes
- no

A: yes

Does "The relative reactivity of zinc and its ability to attract oxidation to itself makes it an efficient sacrificial anode in cathodic protection (CP)." contain the correct answer to "What makes zinc an efficient sacrificial anode?"
OPTIONS:
- yes
- no

A:
yes