Problem: Text: The Stanley Cup playoffs (French: Les series eliminatoires de la Coupe Stanley) is an elimination tournament in the National Hockey League consisting of four rounds of best-of-seven series. Eight teams from each of the two conferences qualify for the playoffs based on regular season points totals. The final round is commonly known as the Stanley Cup Finals, which sees the two conference champions play for the Stanley Cup.

Question: is the first round of nhl playoffs best of 7?
A: yes

Problem: Text: World War I was the first major conflict involving the large-scale use of aircraft. Tethered observation balloons had already been employed in several wars, and would be used extensively for artillery spotting. Germany employed Zeppelins for reconnaissance over the North Sea and Baltic and also for strategic bombing raids over Britain and the Eastern Front.

Question: did they have planes in world war 1?
A: yes

Problem: Text: Black Sails is an American historical adventure television series set on New Providence Island and a prequel to Robert Louis Stevenson's novel Treasure Island. The series was created by Jonathan E. Steinberg and Robert Levine for Starz. It debuted online for free on YouTube and other various streaming platform and video on demand services on January 18, 2014. The debut on cable television followed a week later on January 25, 2014. Steinberg is executive producer, alongside Michael Bay, Brad Fuller and Andrew Form, while Michael Angeli, Doris Egan, and Levine are co-executive producers.

Question: is the series black sails based on a book?
A:
no