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 an arquebus,
( z1 fire :ARG0 ( z2 arquebus ) :ARG1 ( z3 bullet :ARG0-of ( z4 stray ) ) )