Problem: Jach'a K'uchu (Aymara "jach'a" big, "k'uchu" corner, "big corner", also named "Jachcha Khuchu, Jachcha Kuchu") is a 4508 m mountain in a volcanic field in the Cordillera Occidental of Bolivia northeast of the Chullkani volcano. It is located in the Oruro Department, Sajama Province, Turco Municipality. Jach'a K'uchu is one of five mountains which belong to the so-called Jitiri Dome.

Based on the paragraph above can we conclude that "The mountains are said to be some of the most difficult climbs to scale."?

A: It's impossible to say

Problem: Cancer: The Emperor of All Maladies is a 2015 American documentary film directed by Barak Goodman and produced by Ken Burns. The film, in three-episodes of two hours each, is based on the Pulitzer Prize winning 2010 book, "", by Siddhartha Mukherjee, and describes the history of cancer, and cancer treatments, particularly in the United States.

Based on the paragraph above can we conclude that "Cancer: The Emperor of All Maladies the film was created before the book."?

A: No

Problem: Repossessed is an album by Kris Kristofferson, released on Mercury Records in 1986 (see 1986 in music). It was Kristofferson's first full-length solo album since 1981's "To the Bone", although the singer did collaborate with other artists in the meantime, most notably on "Highwayman" with Johnny Cash, Waylon Jennings and Willie Nelson.

Based on the paragraph above can we conclude that "Kris Kristofferson collaborated with Johnny Cash, Waylon Jennings and Willie Nelson on Highwaymen."?

A:
Yes