The wastewater treatment plant and distribution system of water mains, pumping stations and storage facilities provide water to approximately 62,000 customers in the city. There is also a wastewater treatment plant located on the south bank of the James River. This plant can treat up to 70 million gallons of water per day of sanitary sewage and stormwater before returning it to the river. The wastewater utility also operates and maintains 1,500 miles (2,400 km) of sanitary sewer and pumping stations, 38 miles (61 km) of intercepting sewer lines, and the Shockoe Retention Basin, a 44-million-gallon stormwater reservoir used during heavy rains.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): How many kilometers of sewer lines exist in Richmond?
Ah, so.. 61

The final name for the republic during the Soviet era was adopted by the Russian Constitution of 1937, which renamed it the Russian Soviet Federative Socialist Republic.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What document changed the name of Russia in 1973?
Ah, so.. unanswerable

The arts of Southeast Asia have affinity with the arts of other areas. Dance in much of Southeast Asia includes movement of the hands as well as the feet, to express the dance's emotion and meaning of the story that the ballerina is going to tell the audience. Most of Southeast Asia introduced dance into their court; in particular, Cambodian royal ballet represented them in the early 7th century before the Khmer Empire, which was highly influenced by Indian Hinduism. Apsara Dance, famous for strong hand and feet movement, is a great example of Hindu symbolic dance.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): Where was dance not popular in Southeast Asia?
Ah, so..
unanswerable