sailor -> <name>
boat -> <bname, color>
reservation -> <name, bname>

I need to find sailors who reserved EVERY red boat.

So far I have sailors who rented A red boat, and have a list of the red boats. It looks something like

<John, Queen Mary>
<John, Queen E>
<Joe, Queen Mary>

and the red boats are 
<Queen Mary>,<Queen E> 

so the select should return 
<John>