On 12 August, the San Carlos Battalion came across mines placed in their path and one soldier was killed while two were seriously injured. Meanwhile on 10 August, urban commandos took a patrol car by surprise and dropped a grenade inside the car, injuring four and partially destroying the vehicle.
A mine was not dropped inside the car.
Actually, a grenade was dropped inside the car, while mines were place in soldiers' paths. The mix-up confused the model.
( z1 drop :polarity - :ARG1 ( z2 mine ) :ARG4 ( z3 inside :op ( z4 car ) ) )