Input: 

That theory, a concept first proposed by Albert Einstein and often reiterated by British astrophysicist Stephen Hawking, seeks to find a single set of equations that can explain all the fundamental forces in the universe: gravity, electromagnetism, and the strong and weak interactive forces among subnuclear particles.

Sentence: Steven Hawking was successful in devising a grand unified theory.

Output: It's impossible to say


Input: 

Regretful Post<br>Tom was drunk. He decided to get on Facebook. He posted a lot of regretful things. The next day he woke up to a lot of complaints. Tom had to delete and apologize.

Sentence: Tom posted things on his Twitter account.

Output: No


Input: 

Women Hold Up Half the Sky is the solo debut studio album by Ruby Turner, released in 1986 by Jive Records. It includes a cover version of the Staple Singers song, "If You're Ready (Come Go With Me)", a duet with Jonathan Butler, and the Etta James standard "I'd Rather Go Blind".

Sentence: the agent is aged  27

Output: It's impossible to say


Input: 

SEOUL, July 25 South Korea's CLIO Cosmetics applied for preliminary exchange approval for an initial public offering (IPO), Korea Exchange said on Monday. The filing came after an investment arm of French luxury goods giant LVMH said on Friday it took a minority stake in the cosmetics firm, the latest bet by global investors on booming demand for Korean beauty products in major markets such as China. (Reporting by Hyunjoo Jin; Editing by Sherry Jacob-Phillips)

Sentence: The editing for the article was not done by Hyunjoo Jin.

Output: