Task: Explanation
Input (English): Black Face was an American hardcore punk band. The group featured bassist Chuck Dukowski formerly of Black Flag and SST Records, drummer Tom Dobrov, formerly of Oxbow and The Stiffs, guitarist Milo Gonzalez of Insects vs. Robots and The Chuck Dukowski Sextet, and vocalist Eugene Robinson of Oxbow and formerly Whipping Boy. They officially disbanded in February 2012 Question: Which band from San Francisco did Tom Dobrov play in? Answer: Oxbow
Output (English):  The group featured bassist Chuck Dukowski formerly of Black Flag and SST Records, drummer Tom Dobrov, formerly of Oxbow and The Stiffs, guitarist Milo Gonzalez of Insects vs. Robots and The Chuck Dukowski Sextet, and vocalist Eugene Robinson of Oxbow and formerly Whipping Boy.