Given the task definition and input, reply with output. In this task, you are given a context paragraph of the tweet and question. Your task is to generate right answer of given question based on given context tweet paragraph.

Context: Past midnight in Paris for #COP21. Everyone working hard. A critical moment, an opportunity we can't afford to miss. John Kerry (@JohnKerry) December 11, 2015 Question: what city does this tweet mention?
paris