Assertion: forest's tree | /r/CapableOf | remove 210 tonnes of ozone
Facets:
value: in 1991
type: TEMPORAL
Source sentences:
text: A study across the Chicago region determined that trees removed approximately 17 tonnes of carbon monoxide (CO), 93 tonnes of sulfur dioxide (SO2), 98 tonnes of nitrogen dioxide (NO 2 ), and 210 tonnes of ozone (O 3 ) in 1991.