Problem: How to end a relationship on facebook<br>Log into your facebook account. To end a current relationship status on your user profile, you must sign into your account. [substeps] Go to the facebook home page, and enter your registered email address and password in the required fields at the top right corner of the page.

Based on the paragraph above can we conclude that "facebook is used by bryan"?

A: It's impossible to say


Problem: Jeffrey Wincott (born May 8, 1956) is a Canadian actor and martial artist best known for his Gemini Award-nominated lead role in the television series "Night Heat." Wincott currently lives and works in the United States, and has had numerous roles in film, television, and theatre. He is the older brother of actor Michael Wincott.

Based on the paragraph above can we conclude that "Jeffrey Wincott is an only child."?

A: No


Problem: The increased amounts of carbon dioxide (CO2) and other greenhouse gases (GHGs) are the primary causes of the human-induced component of global warming.

Based on the paragraph above can we conclude that "Carbon dioxide is not a greenhouse gas"?

A:
No