11.   The Israeli-Palestinian dispute, with a history of stalls and missed deadlines, is considered the harder problem to resolve.

a. + problem >>共 705
serious 4.46%
economic 3.74%
major 3.48%
financial 2.66%
biggest 2.34%
technical 1.95%
only 1.92%
big 1.91%
potential 1.91%
real 1.87%
harder 0.03%
harder + n. >>共 261
time 24.51%
line 14.54%
sell 3.47%
work 3.30%
drug 2.70%
edge 2.28%
hit 2.11%
look 2.11%
task 2.11%
bargain 1.44%
problem 0.93%
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