Does "As noted in the 2012 collaborative Smithsonian-Monticello exhibit, Slavery at Monticello: The Paradox of Liberty, Jefferson, then a widower, took Hemings as his concubine for nearly 40 years." contain the correct answer to "How long were Jefferson and Hemmings in a relationship?"

A: yes

Does "Electric recording which developed during the time that early radio was becoming popular (1925) benefited from the microphones and amplifiers used in radio studios." contain the correct answer to "What was a benefit of early radio recordings?"

A: yes

Does "Currently tests are underway on developing systems that could create as much damage as a Tomahawk (missile), but at a fraction of the cost." contain the correct answer to "Where can the future of projectile based weapons possibly be found?"

A:
no