Scrub<br>Ana spilled candle wax on her floor. It was so hard to remove! She scrubbed it with metal, plastic, nothing worked. Then she scraped off the wax with a razor blade. That did the trick!
she had to clean the wax before she was caught
( z1 obligate :ARG1 ( z2 she ) :ARG2 ( z3 clean :ARG0 z2 :ARG1 ( z4 wax ) :time ( z5 before :op ( z6 catch :ARG1 z2 ) ) ) )