Context:
Sir Ian Blair, the Metropolitan Police Commissioner, said, last night, that his officers were "playing out of their socks", but admitted that they were "racing against time" to track down the bombers.
Hypothesis: Sir Ian Blair said something the night before this text was published.
Yes
Context:
"No One Hurts Me More Than Me" is a song recorded by Canadian country music artist Chris Cummings. It was released in 2000 as the second single from his second studio album, "Lonesomeville". It peaked at number 7 on the "RPM" Country Tracks chart in August 2000.
Hypothesis: Chris Cummings released a third single after August 2000. 
It's impossible to say
Context:
How to quit soda pop<br>Wean yourself off slowly. While you might be motivated to kick the habit all at once, don't be afraid to take it slow. For example, start by halving your consumption over a week, or removing one beverage (or half of a beverage) each day.
Hypothesis: to wean yourself off you should cut your consumption down.

Yes