I was told that it was impossible to do because even though we had the rolling stock, we did not have the ability to deal with a union that had the opportunity to charge double time, triple time and all kinds of things on a train that was going across the country for two or three days.
Sometimes the train would go across the country for an entire week.
( z1 go :ARG1 ( z2 train ) :ARG4 ( z3 across :op ( z4 country ) ) :frequency ( z5 sometimes ) :duration ( z6 temporal-quantity :quant 1 :unit ( z7 week ) :mod ( z8 entire ) ) )