instruction:
You are given a paragraph (Passage), a question (Question) and two answer options (Option1 and Option2). Your task is to find the correct answer (and return the string of the correct option, not option1/2) for the given question from the given options and based on the given passage. Answer of the question can be found directly from the passage.
question:
Passage: My car needed more gas . It was almost on empty . While driving down the street , I saw that a gas station was open right ahead of me . I turned in and pulled over to a station . I wanted only $ 20 gas in my car , and I told the man I was going to be paying in cash . The attendant pumped gas into my car , making sure it did not go over $ 20 . When he was done , I went into my wallet and took out a $ 20 bill . I had just paid $ 20 for gas and it practically filled up my car . I no longer had to worry that I was going to run out of gas while being on the road or any of the highways . I thanked the attendant and drove away . Question: When did they hand the money to the gas attendant? Option1: When the car parked Option2: After the tank was filled
answer:
After the tank was filled


question:
Passage: The trash can was full and I need to get it emptied . I pull out the black plastic bag that contained the debris . It was heavy and somewhat stuck inside . I forced it out anyways . I got down outside and saw the green container where everyone used to dump theirs . It could get stinky sometimes so I held my breath while I moved closer . I opened the container and dumped the heavy plastic bag . I walked to a distance where I could finally take my breath . I remembered I had something on fire upstairs so I hurried up fast . On getting up I realized there were some refuse I would have taken along . Question: What did they bring down the steps? Option1: The trash can. Option2: The garbage bag.
answer:
The garbage bag.


question:
Passage: I adopted a dog from the animal shelter . I purchased for my dog a harness , leash , food , a clicker , and small training treats . I began with simple commands , such as sit and stay . If she did not do the desired behavior , I did nothing . I did n't reprimand her because I wanted to use positive reinforcement . After she learned simple commands , I advanced her to more complicated things , like going into a down position and then urging her to crawl forward while staying down . At first , I lured her with the treat , and clicked her and rewarded her with the treat if she did it . If she stayed down and crawled , I quickly clicked the clicker and rewarded her with the treat . If she did n't do it , I waited a few minutes and tried again . Question: What is the treat use for? Option1: A reward Option2: to satisfy the dog's hunger
answer:

A reward