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.
“I'm a dental assistant looking for work. Are you hiring?”
“A teen braces consult for me and my 2 kids. We just moved to Bridgeland.”
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.