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.
“a new front door for a rental I own in Cochrane. Tenant is in, need someone reliable.”
“Are you hiring? I have 3 years of experience.”
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.