Q: Does "Generally passenger elevators are available in capacities from 500 to 2,700 kg (1,0006,000 lb) in 230 kg (500 lb) increments.[citation needed]" provide a valid answer to "What capacities are passenger elevators availablee in?"?
A: yes

Q: Does "Multi-party elections have been held since 1992, although a democratically elected government was ousted in the 1997 Republic of the Congo Civil War and President Denis Sassou Nguesso has ruled for 26 of the past 36 years." provide a valid answer to "Who is the ruler of the Congo?"?
A: yes

Q: Does "The spearmen are shown arranged in what resembles the phalanx formation, which requires training and discipline; this implies that the Sumerians may have made use of professional soldiers." provide a valid answer to "What contributed to developing military technology for Sumer?"?
A: no

Q: Does "Hunting and gathering was presumably the subsistence strategy employed by human societies beginning some 1.8 million years ago, by Homo erectus, and from its appearance some 0.2 million years ago by Homo sapiens." provide a valid answer to "What began replacing hunting-gathering at the end of the Mesolithic period?"?
A:
no