/usr/share/axiom-20170501/input/gnarly1.input is in axiom-test 20170501-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 | draw(surface(cos(t)/(1+sin(t)^2),sin(t)*cos(t)*cos(u)/(1+sin(t)^2),
sin(t)*cos(t)*sin(u)/(1+sin(t)^2)),t = -%pi..%pi,u = 0..%pi)
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