[India], Mar 21 (ANI): The Delhi Police on Wednesday filed charge sheet in connection with Bawana fire case, in which 17 people were charred to death in a massive blaze at a firecracker storage unit in Delhi's Bawana area. Earlier in January, a Delhi court sent the owners of the firecracker factory Manoj jain and Lalit Goyal, accused in the Bawana fire, to judicial custody. On January 20, 17 people were killed in a fire at a firecracker storage unit in Bawana area in New Delhi. Of the 17 killed, 10 were women. A man and woman were also injured. (ANI)
Fireworks were not involved in the fire. 
I'm not sure why it was difficult. The writing states that it was a fireworks storage unit, fireworks were definitely involved, making my statment that they weren't, incorrect. 
( z0 involve :ARG1 ( z1 firework ) :ARG2 ( z2 fire ) :polarity - )
(z0 / involve-01
    :ARG1 (z1 / firework)
    :ARG2 (z2 / fire)
    :polarity -)
Fireworks were not involved in the fire .
z0 :polarity 0
z0 :ARG1 z1
z0 :ARG2 z2