What is the fine-grained topic of the following text: Participating restaurants included CHiKN, Fuel & Fuddle, Golden Palace Buffet, Hanami, Hello Bistro, Nellie’s Sandwiches, Original Milano Pizza, Pamela’s Diner, Pie Express, Prince of India, Sciulli’s Pizza, Sorrento’s Pizza, Sree’s Foods, Stack’d Oakland, Sushi Fuku, The Garden Grille and Bar, Thirsty Scholar and Top Shabu-Shabu & Lounge. Only return the topic.
Restaurant Participation