premise: My laboratory professor was explaining today's lab.
initial: He told us not to pour water followed by an acid.
counterfactual: He instructed us to pour water followed by an acid.
original_ending: While I was looking at my notes, I barely paid attention. When the experiment began, I poured water before an acid in a tube. My professor was very upset.
edited_ending: While I was looking at my notes, I barely paid attention.When the experiment began, I poured an acid before the water in a tube.My professor was very upset.<SEP>While I was looking at my notes, I paid attention.When the experiment began, I poured water before an acid in a tube like I was instructed.My professor was very proud.<SEP>While I was looking at my notes, I barely paid attention.When the experiment began, I poured an acid before water in a tube.My professor was very upset.