In this Wednesday, Aug. 16, 2017 photo, a nurse attends to Argelia Mansio who was injured by a stray bullet during an assault staged by unknown attackers at the Roosevelt Hospital, in Guatemala City. The deputy hospital director told reporters that 12 people were wounded, including a child who underwent surgery and was in critical condition. Luis Soto AP Photo
The stray bullet was fired by a rifle.
( z1 fire :ARG1 ( z2 bullet :ARG0-of ( z3 stray ) ) :instrument ( z4 rifle ) )