Text: The Grand Canyon of northern Arizona in the United States, with an average depth of 1,600 m (one mile) and a volume of 4.17 trillion cubic metres, is one of the world's largest canyons. It was among the 28 finalists of the New7Wonders of Nature worldwide poll. (Some referred to it as one of the 7 natural wonders of the world.) Copper Canyon in Chihuahua, Mexico is deeper and longer than the Grand Canyon.

Question: is the grand canyon the second largest canyon in the world?
[separator]
Answer: no

Text: The Originals is an American television series that began airing on The CW on October 3, 2013. Created as a spin-off of The Vampire Diaries, the series follows vampire-werewolf hybrid Klaus Mikaelson as he and his family become embroiled in the supernatural politics of New Orleans.

Question: is the show the originals related to vampire diaries?
[separator]
Answer: yes

Text: In the early development of many organisms, the action potential is actually initially carried by calcium current rather than sodium current. The opening and closing kinetics of calcium channels during development are slower than those of the voltage-gated sodium channels that will carry the action potential in the mature neurons. The longer opening times for the calcium channels can lead to action potentials that are considerably slower than those of mature neurons. Xenopus neurons initially have action potentials that take 60--90 ms. During development, this time decreases to 1 ms. There are two reasons for this drastic decrease. First, the inward current becomes primarily carried by sodium channels. Second, the delayed rectifier, a potassium channel current, increases to 3.5 times its initial strength.

Question: do all neurons have the same action potential?
[separator]
Answer: no

Text: Marvel's Agents of S.H.I.E.L.D., or simply Agents of S.H.I.E.L.D., is an American television series created for ABC by Joss Whedon, Jed Whedon, and Maurissa Tancharoen, based on the Marvel Comics organization S.H.I.E.L.D. (Strategic Homeland Intervention, Enforcement, and Logistics Division), a fictional peacekeeping and spy agency in a world of superheroes. It is set in the Marvel Cinematic Universe (MCU), sharing continuity with the films and other television series of the franchise. The series is produced by ABC Studios, Marvel Television, and Mutant Enemy Productions, with Jed Whedon, Tancharoen, and Jeffrey Bell serving as showrunners.

Question: is marvel agents of shield in the mcu?
[separator]
Answer:
yes