Your river line -- A5o hand

[Jonny Melon]

Villain in this hand is passive (by 5/10 6-max standards, anyway) and seems to only raise with stronger hands. My table image is aggressive, not too tight. I have not been caught raising trash or getting out of line, however.
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5/10 Party 6-max
Hero has A5o in SB.

Folded to me, I raise. BB calls.

Flop: 9 5 5 r.
I bet. BB calls.

Turn: Q (completes rainbow)
I bet, BB raises, I 3-bet, BB caps.

River: 8
Your line?

Bonus points for the 1st person that writes "open fold".

Jon