Problem:
Read the following paragraph and determine if the hypothesis is true:

The Key is a 1958 British war film set in 1941 during the Battle of the Atlantic. It was based on the 1951 novel "Stella" by Jan de Hartog (later republished as "The Distant Shore" and "The Key") and was directed by Sir Carol Reed. William Holden, Sophia Loren and Trevor Howard starred in the production.

OPTIONS:
- Yes
- It's impossible to say
- No
Hypothesis: The Distant Shore, The Key and Stella were all written by Hartog.
****
Answer:
Yes

[Q]: Jidenna Theodore Mobisson (born May 4, 1985), known mononymously as Jidenna, is an American hip hop recording artist and producer. In 2015, Jidenna released two singles, "Classic Man" and "Yoga", promoting Janelle Monae's label Wondaland Records' compilation EP "" with Epic Records. His debut album, "The Chief" was released on February 17, 2017. May 4th marked the single "Classic Man's release in collaboration with Janelle Monae. OPTIONS:
- Yes
- It's impossible to say
- No
[A]: It's impossible to say

Problem: Plainfield South High School, or PSHS, is a four-year public high school located in Joliet, a southwest suburb of Chicago, Illinois, in the United States. It is part of the Plainfield Community Consolidated School District 202, which also includes three other high schools: Plainfield Central High School, Plainfield North High School and Plainfield East High School.

Based on the paragraph above can we conclude that "PSHS is a popular school"? OPTIONS:
- Yes
- It's impossible to say
- No

A: It's impossible to say

Q: Rana amurensis are always brown.
Rana amurensis (Khabarovsk frog, Siberian wood frog, Heilongjiang brown frog or Amur brown frog) is a species of true frog found in northern Asia. It ranges across western Siberia, as well as northeastern China, northeastern Mongolia, and on the northern Korean Peninsula and on Sakhalin. "Rana coreana" was previously included in this species as a subspecies.
OPTIONS:
- Yes
- It's impossible to say
- No
A: It's impossible to say

"They" is a short story written by American science fiction author Robert A. Heinlein. It was first published in the April 1941 issue of "Unknown", and can be found in Heinlein's short story collection "The Unpleasant Profession of Jonathan Hoag". It also appears in a number of multi-author anthologies.
They was published in the year after 1939. OPTIONS:
- Yes
- It's impossible to say
- No
A: No

Problem:
Read the following paragraph and determine if the hypothesis is true:

The Combat Box was a tactical formation used by heavy (strategic) bombers of the U.S. Army Air Forces during World War II. The combat box was also referred to as a "staggered formation". Its defensive purpose was in massing the firepower of the bombers' guns, while offensively it concentrated the release of bombs on a target.

OPTIONS:
- Yes
- It's impossible to say
- No
Hypothesis: The Combat Box was a successful tactical formation used by heavy (strategic) bombers of the U.S. Army Air Forces during World War II.
****
Answer:
It's impossible to say