Read the following context and answer the question. Context: SINGAPORE Envoys from the United States and North Korea are holding talks to iron out any last-minute differences before Tuesday's historic summit between President Donald Trump and North Korean leader Kim Jong Un in Singapore. White House press secretary Sarah Huckabee Sanders told reporters that veteran diplomat Sung Kim is leading the U.S. delegation in a working group meeting Monday at the city-state's Ritz Carlton hotel. The North Korea side is being led by Vice Foreign Minister Choe Son-hui. Monday's meeting is apparently aimed at narrowing the gap between the U.S. and North Korea over the demand for North Korea to give up its nuclear weapons. President Trump expressed confidence about his meeting upon his arrival in Singapore Sunday, telling reporters after stepping down from Air Force One that he his feeling "very good" about Tuesday's summit. Ahead of his arrival, Trump acknowledged he is heading into "unknown territory" for the meeting Tuesday. In response to a question from VOA News just before heading to Asia from the Group of Seven summit in Canada, Trump said "I really feel confident" about the unprecedented encounter between a sitting American president and a member of the family dynasty which has maintained iron-fist control over one of the world's most reclusive countries for three generations. Trump added that he believes Kim, half the age of the American president, "wants to do something great for his people." But Trump cautioned that Kim "won't have that opportunity again" if the talks do not go well -- describing this opportunity for diplomacy with the United States as a "one-time shot." Trump and others in his government have said advancement has been made on obtaining a commitment from Kim to give up all his nuclear weapons and long-range ballistic missiles. Progress could lead to a peace treaty and formally end a state of war on the Korean peninsula, which has persisted for nearly 70 years. Whether such a deal can be done, Trump declared on Saturday, is something he will know almost... Question: Where is the summit being held? Answer:

Choose from:
1). Singapore..
2). not enough information.
3). North Korea..
4). The U.S..
The answer is:
1).