Task: Question Answering
Input (English): Passage: I was hungry for hot dogs and sauerkraut so when I was at the grocery store I bought a pack of hot dogs , two cans of sauerkraut and a pack of hot dog buns . When I got home I opened the package of hot dogs and put them in the bottom of my slow cooker . I opened the cans of sauerkraut and added them on top of the hot dogs . At the end of four hours I checked and the hot dogs were steaming and looked to be hot . I opened the package of buns and pulled two out . I put a little ketchup and a little mustard on each bun . I pulled out two hot dogs and put one in each bun on top of the sauerkraut . I put the rest of the sauerkraut and hot dogs in a container and put them in the fridge to eat later . Question: How long did the slow cooker cook? Option1: 1 hour Option2: 4 hours.
Output (English): 4 hours.