Farming and Inheritance Tax

I have huge respect for the hon. Gentleman, my constituency neighbour, but I have a question. I think the hon. Member for North Cornwall (Ben Maguire) suggested a working farm tax, and it was not clear to me whether the hon. Gentleman accepted or rejected that suggestion. We have heard Liberal Democrats talk in recent weeks about land taxes and wealth taxes as alternatives to raise the revenue to fund their many, many spending commitments. Could the hon. Gentleman clarify that point?