Assertion: carbon dioxide | /r/CreatedBy | adding an acid
Facets:
value: to the sedimentary rock
type: TRANSITIVE-OBJECT
Source sentences:
text: It has long been known that 'fixing air', as carbon dioxide used to be known, could be made by adding an acid to the sedimentary rock, chalk.
text: It has long been known that 'fixing air', as carbon dioxide used to be known, could be made by adding an acid to the sedimentary rock, chalk.