Every form submission, in the person's own words, with where they came from. Label each one so tests are judged on good leads, not just more leads.
“Small business, need a 10x20 drive-up for inventory. Monthly is fine.”
“Do you have a parking for an RV available this weekend? Ready to reserve.”
The AI labels every lead. “Needs review” means it was unsure, so a person decides; anyone can change any label. The AI reads the answers only, never names, emails or phone numbers.