In a large zip-close bag or a shallow glass dish, combine 2 tablespoons soy sauce, 1 tablespoon vinegar, and 1 tablespoon sesame oil. Add the meat. Zip the bag or cover the dish, and marinate for 30 minutes at room temperature, or up to 24 hours in the refrigerator.
Combine rice, ½ tablespoon soy sauce, and broth in either a rice cooker, a saucepan (for cooking on the stovetop), or a glass dish (for cooking in the microwave). Cook until rice is tender and easily fluffed with a fork. Set aside.
Coat the bottom of a skillet with 1 to 2 tablespoons olive oil, and heat over medium-high heat. Add meat (discard the marinade), and cook, stirring often, until evenly browned and an internal temperature of 145 F is reached. Remove meat from skillet and set aside.
Add enough of the remaining olive oil to the skillet to coat the bottom, and heat until hot over medium-high heat. Add vegetables and remaining soy sauce, vinegar, and sesame oil. Cook, stirring constantly, until vegetables reach desired tenderness. Add meat, and cook until heated through.
Serve meat and vegetables over hot rice on individual plates.
