Task: Question Answering
Input (English): Passage: I like to chop vegetables because that means I get to cook them and eat them afterwards . I chose to make a vegetable salad using lettuce , tomatoes , onions , cilantro , bacon , and croutons . First , I took out the vegetables and I laid them all out on my cutting board . I set the lettuce out , it was a head , and I chopped the lettuce head into strips using my knife . Then I washed my knife and took my tomatoes , I cut them long ways and then across the other way so that they were diced . Once that was done , I washed my knife again and cut the outer edges of the onion off before cutting it long ways . Then I took my cilantro and bacon and croutons and threw them in as well and shook up the salad . Question: What makes their eyes water? Option1: tomatoes Option2: Sulfur content in the onion.
Output (English): Sulfur content in the onion.