Instructions: 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.
Input: Washington (CNN) Former Mexican President Vicente Fox is back to trolling Donald Trump on Twitter, particularly as the US President-elect has waffled on his pledge to have Mexico pay for a border wall and amid questions about Russian interference in the election. "Sr Trump,the intelligence report is devastating. Losing election by more than 3M votes and in addition this.Are you a legitimate president?" Fox tweeted Friday night. Fox's jab at Trump comes after the US intelligence community concluded in a declassified report released that Russian President Vladimir Putin ordered an "influence campaign" aimed at hurting Hillary Clinton and helping Trump.Fox has been a harsh critic of TrumpHe wasn't the only Mexican to tweet at Trump on Friday 
 Questions:Trump is still insisting that _ will ultimately pay billions for the construction of a massive wall along the southern border. (A) Washington (B) CNN (C) Mexican (D) Vicente Fox (E) Donald Trump (F) Twitter (G) US (H) Russian (I) Sr Trump (J) Fox (K) Trump (L) Vladimir Putin (M) Hillary Clinton
Output:
(C)