You will be given a definition of a task first, then some input of the task.
In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Among the entities, try to find the best entity that is most likely to fill in "_" and classify the answers based on options.

Philadelphia (CNN) The Democratic A-list on Wednesday cast Donald Trump as a threat to the American dream -- and Hillary Clinton as the nation's only chance to save it. President Barack Obama called Trump a "homegrown demagogue." Michael Bloomberg dismissed him as a "con." And Vice President Joe Biden, in rejecting Trump, declared that "Americans have never, ever, ever, ever let their country down." How Obama made some anti-Trump Republicans jealous They set the frame for the Democratic National Convention's most important moment: Clinton's speech Thursday night. Here are six takeaways from the third night in Philadelphia: Obama: 'the America I know'President Obama gave a strong endorsement of Hillary Clinton and denounced Donald TrumpJoe Biden and Michael Bloomberg also used speeches to take down Trump 
 Questions:From a video introduction that focused on the work left to do to achieve _'s vision, the President made clear that Clinton is the only person capable of solidifying his legacy. (A) Philadelphia (B) CNN (C) Democratic A (D) Donald Trump (E) American (F) Hillary Clinton (G) Barack Obama (H) Trump (I) Michael Bloomberg (J) Joe Biden (K) Americans (L) Trump Republicans (M) Democratic National Convention (N) Clinton (O) America
Output:
(G)