# menteri besar took office left office party
#
menteri besar
took office
left office
party
number
number parsed year month day
number parsed year month day
number text date date text
1 jaafar mohamed september 16, 1928 november 23, 1931 no party
what is the number of menteri besar that served 4 or more years ?
WP VBD-AUX DT NN IN NNP NNP WDT VBD CD CC JJR NNS .
3
select count ( c2 ) from w where c4_year - c3_year >= 4