And with these words she vanished by the window through which she came , while the fairies comforted the weeping queen and took counsel how best the princess might be kept safe during her childhood .<br>At the end of half an hour they had made up their minds what to do , and at the command of the fairies , a beautiful palace sprang up , close to that of the king and queen , but different from every palace in the world in having no windows , and only a door right under the earth .
It took them more than 37.5 minutes to make up their minds on what to do.
It says at the end of half an hour, so it only took 30 minutes. It's difficult because the system might not understand how many minutes are in half an hour.
( z1 take :ARG0 ( z2 make-up-mind :ARG0 ( z3 they ) :ARG1 ( z4 thing :ARG1-of ( z5 do :ARG0 z3 ) ) ) :ARG1 ( z6 more-than :op ( z7 temporal-quantity :quant "37.5" :unit ( z8 minute ) ) ) :ARG2 z3 )