The voluntary recall is considered a Class II recall since it covers products that might cause a temporary health problem or pose only a slight threat of a serious nature, the FDA said.
A voluntary recall means it is mandatory that the product is returned. 
( z1 mean :ARG1 ( z2 recall :ARG1-of ( z3 voluntary ) ) :ARG2 ( z4 return :ARG1 ( z5 product ) :ARG1-of ( z6 mandate ) ) )