story: Tom was new to construction work. On his first day he didn't know how to pour the cement. The boss yelled at Tom for messing up. The crew couldn't fix it and left it for a day. Later that day, a car hit the bad cement and crashed.
 selected sentence: On his first day he didn't know how to pour the cement.
He doesn't know how to pour the cement >Causes/Enables> He messes up