Two weeks ago, China became the first nation to operate a maglev railway commercially, when officials inaugurated a 30-kilometer-long line between downtown Shanghai and the city's airport.
Shanghai is a large city without an airport.
( z1 city :mod ( z2 large ) :ARG0-of ( z3 have :polarity - :ARG1 ( z4 airport ) ) :domain ( z5 city :name ( z6 name :op "Shanghai" ) ) )