After smashing through the barriers at the perimeter, the invaders engaged in hand-to-hand combat with police officers, injuring dozens of them, and broke into the building. Visit our website terms of use and permissions pages at www.npr.org for further information. Accuracy and availability may vary. The authoritative record of NPRs programming is the audio record. All rights reserved.
The sources that became available attacked the police.
( z0 attack :ARG0 ( z1 source :ARG1-of ( z2 become :ARG2 ( z3 available :ARG2 z1 ) ) ) :ARG1 ( z4 police ) )
(z0 / attack-01
    :ARG0 (z1 / source
              :ARG1-of (z2 / become-01
                           :ARG2 (z3 / available-02
                                     :ARG2 z1)))
    :ARG1 (z4 / police))
The sources that became available attacked the police .
z1 :ARG1-of z2
z2 :ARG2 z3
z3 :ARG2 z1
z0 :ARG0 z1
z0 :ARG1 z4