Conversation so far:
What business was Gavin Newsom involved in?
Newsom and his investors created the company PlumpJack Associates L.P.
What did the PlumpJack winery do?
PlumpJack Winery produces primarily super premium Cabernet Sauvignon and Chardonnay varietal wines from Napa Valley grapes.
Was the PlumpJack winery successful?
The business grew to an enterprise with more than 700 employees.

Question: Was he involved in other businesses?
Self-contained rewrite: Was Gavin Newsom involved in other businesses besides the Plumpjack winery?