Up to 150 workers were believed to have been inside the factory, which produces syringes and other plastic medical supplies, at the time of the explosion.
The factory held several people inside when the explosion went off.
( z1 hold :ARG0 ( z2 factory ) :ARG1 ( z3 person :quant ( z4 several ) ) :location z2 :time ( z5 go-off :ARG1 ( z6 explode ) ) )