[The Sontarans are trying to break into the president's office]
That's not going to hold forever, Chancellor.
A heavy, easily fusible, soft, malleable base metal such as lead is not the best defence against heat-intensive weaponry.
I agree.
Fortunately, someone had the good sense to reinforce the structure with a titanium-based alloy.
[smiles] Your recipe?
A suggestion of mine, yes.
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