How about, speculatively …

1. setting a style for labels/comments
2. using Find/replace to apply that style to all this non-content
3. using Find to pull out all the real content, which you can now identify because it's not using your new :labels style

You could also try a variant with two styles, one for labels such as "company" and another for handholding such as "please provide the name of the company", discard the non-content, change the paragraph mark after each label to a tab, copy/paste into a spreadsheet …

Of course, I haven't had the time to create a dummy questionnaire and test these ideas <g>