premise: Grey<br>I went to the store to buy a new phone. The one I wanted was available. The salesperson showed me three different colors. I had a hard time choosing. I finally decided on the grey model.
hypothesis: The phone was available in blue.
reason: It said he showed him three colors and one was grey. There is no way to know whether one of the others was blue or not. It didn't say what the other colors were. 