BOZEMAN, Mont. (AP) — Authorities say four people, including three children, were hospitalized after a gas explosion at a home in West Yellowstone. Shane Grube, chief of the Hebgen Basin Rural Fire District said firefighters were called to the mobile home Tuesday morning. He says the explosion caused a fireball that blew itself out. Two people suffered severe injuries and two were moderately injured. All of the victims were taken to a hospital in Rexburg, Idaho. The fire district is investigating with help from the state fire marshal’s office. No other details were released.
Two adults suffered severe injuries.
"Authorities say 4 people, including 3 children...." thus, only 1 person was an adult.
( z1 suffer :ARG0 ( z2 adult :quant 2 ) :ARG1 ( z3 injure :ARG1 z2 :degree ( z4 severe ) ) )