Problem: In 1955, the Aurora Borealis, a coating applied to crystal stones to produce a "rainbow of colors" effect was introduced.

Based on the paragraph above can we conclude that "Aurora Borealis crystals give off vibration."?

A: It's impossible to say

Problem: Venezuelan President Hugo Chavez has said he is prepared to receive detainees held by the US military at the Guantanamo Bay camp in Cuba. US President Barack Obama has ordered the closure of the controversial camp, in which around 240 inmates are held, by next year. Mr Chavez made his offer at a summit of South American and Arab countries. It is highly unlikely the Pentagon will take him up on it, however, given the poor state of US ties with Venezuela.

Based on the paragraph above can we conclude that "Venezuelan citizens are detained in Guantanamo Bay"?

A: It's impossible to say

Problem: Once upon a time the idea of editing photos on a phone or tablet was considered folly akin to painting watercolours on a piece of sponge. But that all changed as screens got sharper and touch control more precise. Plus, with many of us now using smartphones as our main camera, there's no shortage of raw material on them that could benefit from a bit of judicious tweaking before posting to Facebook or Instagram. There are hundreds of photo-editing apps out there clamouring for your attention, but the dozen you'll find listed below are the best we've tried so far.

Based on the paragraph above can we conclude that "Watercolor painting on a sponge is foolish."?

A:
Yes