who robbed us

[azz]

a. It will be known who robbed us.
b. Who robbed us will be known.


Are both of the above sentences grammatically correct?

I think in theory they are equivalent, but in practice (b) sounds almost wrong to me!

 

[5jj]

Neither is at all natural.

 

[jutfrank]

But they're both grammatical, if that's what you really want to know.

 

[Tarheel]

Perhaps:

They are sure they will catch the robber. They have a good description, and several people recognized him.