What is correct amount to bet to induce a raise?

[eemil]

$4 tournament on Stars, 1563 players, early stage of the tournament.

How do you evaluate the situation on river and which is your view how much to bet?

www.pokerxfactor.com/SH208232/45889_20091221_035440

[shaun]

I bet around 400 mark as none of the other players has shown any strength, so I would not expect the ace to be out there.

Your opponents play was terrible , they have the third nut hand and just check call.