Problem: Does "The NVA received substantial military and economic aid from the Soviet Union and China, turning Vietnam into a proxy war." answer the question "The NVA was aided by military and financial aid from what two countries?"

A: yes

Problem: Does "As of 2011[update] the median age was 35.6; more than a quarter of residents were under age 20 and 11% were over age 65." answer the question "Which age group accounted for 10.5% of the population in 2000?"

A: no

Problem: Does "In Aavik's dictionary (1921), which lists approximately 4000 words, there are many words which were (allegedly) created ex nihilo, many of which are in common use today." answer the question "What was the period of time in which Johannes Aavik was alive?"

A:
no