For example "survivors aren't buried". And for the first one possibly "no way".
Also, you possibly might want to check the box that makes people answer the questions separately, so that you won't get "1" when you type "15", for example. I don't remember what it says, but it's on the first page when you create a quiz.
I have tried to update the quiz to make it separate each answer but it does not seem to have updated and I am aware that 'none' will work for two questions. I have also added a few more acceptable answers but again none of these seem to be working.
Assuming there is smoke, as the question implies that there is (who knows? Maybe the train is on fire), we could ascertain the direction it was blowing.
Also, you possibly might want to check the box that makes people answer the questions separately, so that you won't get "1" when you type "15", for example. I don't remember what it says, but it's on the first page when you create a quiz.