Problem: Derwael Ice Rise is 40km long, 35km wide and about 400 m tall ice rise in ice shelf off Princess Ragnhild Coast, Antarctica. Situated 70km east of Breid Bay in northern part of Roi Baudouin Ice Shelf, directly in front of Western Ragnhild Glacier. Named for geodesist of Belgian Antarctic expedition Jean-Jacques Derwael.

Based on the paragraph above can we conclude that "Derwael climbed this ice rise and it was named for him because he did so"?

A: It's impossible to say

Problem: Craig Conway, fired as PeopleSoft's chief executive officer before the company was bought by Oracle, was in England last week.

Based on the paragraph above can we conclude that "PeopleSoft was bought by Oracle."?

A: Yes

Problem: If legalization reduced current narcotics enforcement costs by one-third to one-fourth, it might save $6 - $9 billion per year.

Based on the paragraph above can we conclude that "The narcotics enforcement currently spend between $6-9 billion on purchasing narcotics"?

A:
It's impossible to say