Kevin falls<br>Kevin is at a theme park. He goes on the big roller coaster. He is having a great time. The roller coaster goes upside down. Kevin falls out and injures himself badly.
The locking mechanism failed on the roller coaster car.
( z1 fail :ARG1 ( z2 mechanism :instrument-of ( z3 lock ) ) :location ( z4 car :mod ( z5 roller-coaster ) ) )