[Dujon] Not a product of WWII.

Oops, my answer to Kim was wrong. On searching out the date of its completion, I find it was not in the 20th century.

[Rosie] Not a telescope.

And Knobbly scores a hole in one! Have this genuine Rosetta stone. My answer to the weightlifting question is explained by the fact that on Earth, it would weigh about 100 kg, which is more than I've ever bench pressed, but sitting on the comet it's estimated to weigh about 1 gram -- but you can't get there to lift it.

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Sorry Tuj, was that where you were heading?
Next up is Vegetable

Well, someone has to kick it off.

[Knobbly] One letter at a time? No =)

[Raak]

Hidden text

Measuring weight in g/kg rather than N?

[Dujon] No, not edible (is the least misleading answer, although everything is edible once)
[GL] Yes, alive
[Phil] Yes, wooden *ripple of applause*
[Tuj] Yes, unique (or at least specific)
[Raak] No practical use

[Dujon] Not in Sherwood Forest
[Raak] (Back from checking something I probably should have before starting) No, not unusually old
[GL] Not a fruit tree

[Rosie] Yes it is in the UK