Assertion: gunpowder's component | /r/HasProperty | a rosin mixture
Facets:
Source sentences:
text: Other miscellaneous components included a rosin mixture to hold the lead balls in place and which produced smoke to assist the artillery spotters, a steel push plate between the lead balls and the expelling charge, a rotating band on the base of the shell to spin the shell as it moved up the gun barrel, and a nose cone to reduce aerodynamic resistance of the shell.