Assertion: calcium carbide | /r/HasProperty | manufactured since the turn of the century
Facets:
Source sentences:
text: Calcium carbide has been manufactured since the turn of the century and has been used as raw material in the heavy chemical industry for a long time, e.g. for producing lime nitrogen and PVC.
text: Calcium carbide has been manufactured since the turn of the century and has been used as raw material in the heavy chemical industry for a long time, e.g. for producing lime nitrogen and PVC.