added clean notebook
added clean notebook


Former-commit-id: d0033a88287c482a17ac0ac130d561fec558a4f4 [formerly 998b5f36311997b8a4d11f40de12ede8426ca467] [formerly 386c9ab051b461f5596eef918785e93c5608cf78]
Former-commit-id: cdfea5109b4a277e9ee4a33a3966ec02372ef507
Former-commit-id: da9b3319378fabcf73b72cfb2f93825202336415
dssg/wikienergy,dssg/wikienergy,dssg/wikienergy,dssg/wikienergy,dssg/wikienergy