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.
“Looking for a lawyer in Vancouver.”
“Buying a house in Signal Hill, possession is the 30th. Need a lawyer for the closing.”
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.