Possible Clues:

• Where some big ideas originate
• Study groups?
• Fine military vehicle's carrying king's opinion-makers
• "No, no, bigger than Humvees. __!"
• 'No, no, bigger than Humvees. __!'
• Workplaces for some research associates
• Policy institutes
• I'm obliged to drink liquid tea, say, in research groups
• Expert groups sign document, finally being in credit
• Experts who ponder on army vehicles and other things