Task: Question Answering
Input (English): Passage: White House Down -- Sawyer surrenders himself to Walker to save Emily. Walker attempts to force Sawyer to use the football to launch the nuclear missiles against the various cities in Iran; Walker blames the Iranian regime for killing his son in combat. Sawyer refuses at first, while Cale sets various rooms on fire as a diversion. Down in the tunnels, Tyler inadvertently triggers the explosives and dies when they detonate. After killing most of the remaining mercenaries and freeing the hostages, Cale confronts Stenz and blows him up with a grenade belt during a fight. Sawyer attacks Walker, who uses Sawyer's handprint to activate the football. Walker locks Iran's targets with the football when Cale enters the Oval Office by crashing a reinforced Chevrolet through the wall. When Walker reaches to launch the missiles, Cale opens fire on Walker with the car's Gatling gun, violently killing Walker who is thrown against the wall in the gunfire. Emily waves a presidential flag on the front lawn, convincing the incoming fighter planes to call off the air strike. Raphelson is revealed to have conspired with Walker in orchestrating the attack. Sawyer has Raphelson arrested for treason and names Cale as his new special agent and takes him and Emily on a personal aerial tour of DC.
Question: does the president die in white house down
Output (English): 0