Assertion: carbon monoxide | /r/HasSubevent | death
Facets:
Source sentences:
text: Carbon monoxide (also known as CO) is a gas that causes illness and can lead to death.
text: This means that the sufferer can often go on breathing in carbon monoxide, which can then lead to either long term or permanent damage, or death.
text: It is also the most common cause of occupational gas poisoning leading to death.