Problem:
Read the following paragraph and determine if the hypothesis is true:

How to prevent headaches after air travel<br>Try ibuprofen. Oftentimes, headaches that occur during or after flight are due to a sudden change in altitude. The painkiller ibuprofen may effectively prevent altitude related headaches before they begin.
Hypothesis: Headaches that occur during or after flight are usually due to a sudden change in altitude.
****
Answer:
Yes

Problem:
Read the following paragraph and determine if the hypothesis is true:

The Extra Girl (1923) is a story of a small-town girl, Sue Graham (played by Mabel Normand) who comes to Hollywood to be in the pictures. This Mabel Normand vehicle, produced by Mack Sennett, followed earlier films about the film industry and also paved the way for later films about Hollywood, such as King Vidors Show People (1928).
Hypothesis: King Vidors Show People was produced by Mack Sennett.
****
Answer:
It's impossible to say

Problem:
Read the following paragraph and determine if the hypothesis is true:

Stains<br>I tried not to do anything to mess up the new carpet. I was very careful while I cleaned the house. Just as I turned from picking up a can, my dog ran into me. The can flew out of my hand and hit the carpet. There was now a huge soda stain that I couldn't get out.
Hypothesis: The carpet was ugly
****
Answer:
It's impossible to say