Context:
How to take a medical history<br>Collect information on your family. Information on your family members' health is important for identifying conditions that may run in your family. If your family members have a condition that has a genetic component, you might, in some cases, also be vulnerable.
Hypothesis: Information on your family members' health is important for identifying your life expectancy. 
It's impossible to say
Context:
It was the first time that I had really ever been around Barrie Callahan, so she strikes me -that memory strikes me because my mother had known her previously. And she was speaking about the textbook, just questioning them. I don't remember her exact words.
Hypothesis: The author has a crush on her. 
It's impossible to say
Context:
The ecological problems stem in large part from the fact that the brackish water and productive coastal wetlands and natural areas are often supplied with nutrient-rich irrigation return water, sometimes from rice farming. The Ebro Delta and its wetlands suffer similar water quality problems since they lie around the fringes of the large Delta farm region.
Hypothesis: This issue causes a lot of problems to farmers

It's impossible to say