The weapon Inspectors have had since 1991 to peacefully disarm Iraq of its weapons of mass destruction.
The weapon Inspectors started to peacefully disarm Iraq of its weapons of mass destruction in 1991.

The statement said weapons inspectors have had since 1991 to peacefully disarm Iraq however it does not state that they have been working on this since that year. This could be true or false.
( z1 start :ARG0 ( z2 person :ARG0-of ( z3 inspect :ARG1 ( z4 weapon ) ) ) :ARG1 ( z5 disarm :ARG0 z2 :ARG1 ( z6 country :name ( z7 name :op "Iraq" ) ) :ARG2 ( z8 weapon :ARG2-of ( z9 destroy :degree ( z10 mass ) ) :poss z6 ) :manner ( z11 peaceful ) ) :time ( z12 date-entity :year 1991 ) )