Context:
How to clean quartz<br>Rinse the quartz off with a power washer. If you have a large amount of quartz with a heavy amount of mud or dirt on it, you can try to rinse it off with a power washer. Set your quartz on the ground (preferably on concrete or asphalt) and rinse off the dirt.
Hypothesis: When using the power washer, it is more effective to use water at the right temperature. 
It's impossible to say
Context:
This high tech park will encourage the creation or relocation of research-based companies, provide attractive employment opportunities in the high tech sector for co-op students and graduates and produce long term financial benefits that will help the university to enhance the quality and relevance of its programs.
Hypothesis: The university requires the financial benefits of this high tech park to survive.
It's impossible to say
Context:
A Girl Name Reagan<br>Tim was asked to show the new student around. He was to wait in the school office for a student named Reagan. Waiting for the student to arrive he wondered what they would be like. Tim assumed the person would be tall like him and a boy. When the person finally arrived it was short girl dressed all in blue.
Hypothesis: Tim waited for the short girl to arrive expecting it to be a man.

Yes