Of these two modern art museums, which style do you prefer? Click on the line to indicate your preference. Clicking on the middle of the line would indicate an equal preference. Clicking closer to one or the other images would indicate stronger preference for the closer image. You may click again on the line to relocate your preference.
Note: In this demo, clicking the Next button reveals in the rating (on a 0 to 100) scale in a pop-up window. In actual use, it would send the rating to the server and present the next question on a new web page.