National currencies will be completely replaced by the euro in within six months after the introduction of euro notes and coins.
National currencies will be somewhat replaced by the euro within six months after the introduction of cryptocurrency.
First, the context says it will be "completely" replaced, whereas I said "somewhat"; secondly, the context states after the introduction of "euro notes and coins", whereas I said "cryptocurrency" - based on these reasons, my statement is definitely incorrect as the facts have been changed substantially. I think the system had difficulty because it strayed too far outside of the context, and too far into the realm of what is possible. 
( z1 replace :ARG1 ( z2 currency :mod ( z3 nation ) ) :ARG2 ( z4 euro ) :degree ( z5 somewhat ) :time ( z6 after :op ( z7 introduce :ARG1 ( z8 cryptocurrency ) ) :quant ( z9 up-to :op ( z10 temporal-quantity :quant 6 :unit ( z11 month ) ) ) ) )