Problem: How to filter wine<br>Obtain a gravity flow filter. This method of filtering is the cheapest of all the filtration methods. It works by connecting the filter body, containing a filter pad, with a siphon tube.

Based on the paragraph above can we conclude that "This method of filtering is the lowest cost of all the filtration methods"?

A: Yes

Problem: Chalky<br>Hank's mouth felt sort of weird. He'd just gotten a composite resin filling the day before. Now there was a chalky taste and the feeling of something artificial. Hank read that alcohol could wear away the rosin material. He decided to binge on coffee to wash away the taste.

Based on the paragraph above can we conclude that "There was nothing different about Hank's mouth"?

A: No

Problem: Anglo/Dutch Royal Dutch Shell, Total, of France, and Spain's Repsol were all named as examples of established oil companies involved in the oil-for-food programme before surcharges began in 2001.

Based on the paragraph above can we conclude that "this programme has ended"?

A:
It's impossible to say