/usr/lib/open-axiom/input/cone.input is in open-axiom-test 1.4.1+svn~2626-2ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 | -- graph of a cone
draw(surface(u*cos(v),u*sin(v),u),u = -3..3,v = 0..2*%pi,[title "Cone"])
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