Instruct: Given a premise, retrieve hypotheses that are entailed by the premise.
Query: Police are investigating after a motorcyclist and his pillion rider were seriously injured in a crash near the Perth CBD last Wednesday evening. About 9.25pm, the 22-year-old man was riding a red Yamaha 125cc motorcycle north with a 17-year-old pillion passenger over the Narrows Bridge along the Mitchell Freeway. The motorcycle involved in the crash. Credit:WA Police As the motorcycle passed the Mill Point Road exit, it was hit by a silver 2005 model Honda Accord. The rider and passenger were thrown from the motorcycle and received serious injuries.
The passenger did not die at the scene of the accident. 
The silver vehicle crashed into another vehicle.
They were on a motorcycle.
A patrol car was severely damaged in a car crash.
An old man and a teenager were both hurt in the accident.
A few people were injured in the accident.
The passenger's serious injuries were due to him being thrown from the motorcycle and not wearing a helmet.
A biker is critically ill in urgent hospital after colliding with a lamppost
A biker is critically ill in medical hospital after colliding with a lamppost
The crash was an accident.
A biker is critically ill in hospital after colliding with a metal lamppost
Two BMWs were destroyed following a police chase.
A biker is critically ill in hospital after colliding with a heavy lamppost
The person mentioned was in a car accident
Motorists were very inconvenienced about the altercation 
A biker is critically ill in hospital after colliding with a large lamppost
Two police officers were injured 
Two women were injured.
There was a single vehicle crash.
A biker is critically ill in hospital after colliding with a tall lamppost
A woman was involved in the accident.
Under twenty people were hurt in the accident.
The passenger's serious injuries were due to him being thrown from the motorcycle and not wearing a helmet.
No one was hurt in the accident
Two people were thrown from the Honda motorcycle during the accident.