DAYTON, Ohio. A cargo plane bound for Montreal with a small quantity of hazardous chemicals crashed and exploded shortly after takeoff.
There was a hazardous chemical explosion after a plane flying to Canada crashed after takeoff. 
( z1 explode :ARG1 ( z2 chemical ) :ARG0-of ( z3 hazardous ) :time ( z4 after :op ( z5 crash :ARG1 ( z6 plane :ARG1-of ( z7 fly :destination ( z8 country :name ( z9 name :op "Canada" ) ) ) ) :time ( z10 after :op ( z11 take-off :ARG1 z6 ) ) ) ) )