How to clean potatoes<br>Start with clean hands. Be sure to wash your hands first using an antibacterial soap, and to rinse them well. You don't want to transfer any bacteria to your clean potatoes.
you need to wash your hands before cleaning potatoes 
( z1 need :ARG0 ( z2 you ) :ARG1 ( z3 wash :ARG0 z2 :ARG1 ( z4 hand :part-of z2 ) :time ( z5 before :op ( z6 clean :ARG0 z2 :ARG1 ( z7 potato ) ) ) ) )