Political leaders pledged that construction of the so-called Freedom Tower -- which will rise 1,776 feet into the air and be the world's tallest building -- will be finished on schedule by the end of 2008.
Political leaders have never pledged.
( z1 pledge :polarity - :ARG0 ( z2 person :ARG0-of ( z3 lead :ARG1 ( z4 politics ) ) ) :time ( z5 ever ) )