Things ought to be said were not told today; one more unfinished task accumulated.
For the questionnaire part, I decided to stick to applying the webster's whole sections into mine, and add Novak's as a supplement.
As for the subjects, I do need to seek help. I shall find some professors of the English department who are willing to lend me their students and time for my experiment. And also I should loose my restrictions on subject qualification. As long as I cannot think up four scenarios for them to search, and four are indeed too much burden for subjects, more subjects will be required.
I need foreigners who visits online bookstore! How can I find people who are willing to help without much monetary reward???