"You are wrong."
Remember this is a beta version - it's normal that some answers aren't there the first time, and it's your job and contribution to the community to report them. I received about 10 emails informing of changes implemented that I suggested: think of it as taking one for the team: you got it wrong, but if you report it no one else will have to again.
I like to put in strange word orders to get them "wrong", so I can suggest them as correct solutions. While I'm not really a fan of the mandatory accusative case, I think as long as we're using it we might as well use it as it was intended: for free word order. I don't know if the course team likes me doing it, but the little message at the end of each "we now accept this translation" message tells me to keep it up, so I will. The language is so simple that the setback in the progress bar just means more practice for me.
I could be mistaken, but I don't believe veri is a word. The closest I could find was verdiri, to tell the truth.
However, to lie is not malverdiri; it's mensogi. In any case, lying is not quite the same as being wrong; since lying is by definition intentional, and being wrong could be accidental.