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!
Candle wax cannot be removed with a sharp blade. 
( z1 possible :polarity - :ARG1 ( z2 remove :ARG1 ( z3 wax :source ( z4 candle ) ) :instrument ( z5 blade :ARG1-of ( z6 sharp ) ) ) )