Nine soldiers and two police officers were killed in the ensuing gun battle, and two police officers were wounded, the officials said.
The soldiers attempted to protect the police officers.
( z1 attempt :ARG0 ( z2 soldier ) :ARG1 ( z3 protect :ARG0 z2 :ARG1 ( z4 person :ARG0-of ( z5 have-org-role :ARG1 ( z6 police ) :ARG2 ( z7 officer ) ) ) ) )