Problem: USS "Yorktown" (Gunboat No. 1/PG-1) was lead ship of her class of steel-hulled, twin-screw gunboats in the United States Navy in the late 19th and early 20th centuries. She was the second U.S. Navy ship named in honor of the American Revolutionary War's Battle of Yorktown.

Based on the paragraph above can we conclude that "the ship is held together with wood and steal"?

A: No

Problem: Nival was founded in 1996 by Sergey Orlovskiy. In early 2005, the company was bought by Ener1 Group, a Florida-based holdings company, for around US$10 million.

Based on the paragraph above can we conclude that "Ener1Group has bought many other companies."?

A: It's impossible to say

Problem: A wintry mix threatens to create slick conditions for Monday evening's commute. The electronic message boards along Interstate 64 warn drivers heading up Afton Mountain to beware of black ice. The Virginia Department of Transportation did not pre-treat the interstates because crews predicted that the rain would wash it off. VDOT says crews are on standby to start putting down a salt and abrasive mixture to prevent an icy build-up.

Based on the paragraph above can we conclude that "the message boards warns of black ice"?

A:
Yes