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.
“Renovating the kitchen, need a 10x10 unit for about 3 months.”
“Do you have a climate-controlled 10x15 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.