NL200 - Top two pair on paired board faces minraise on the river

[Kharlog]

No reads on villain yet. That kind of minraise is almost always for value but i'm getting very good odds... Would anyone fold this? Feel free to comment other parts of the hand as well.

Full Tilt Poker
No Limit Holdem Ring game
Blinds: $1/$2
2 players
Converter

Stack sizes:
SB: $206
Hero: $194

Pre-flop: (2 players) Hero is BB with J[img]/images/graemlins/heart.gif[/img] Q[img]/images/graemlins/club.gif[/img]
<font color="#cc0000">SB raises to $6</font>, Hero calls.

Flop: J[img]/images/graemlins/club.gif[/img] 2[img]/images/graemlins/club.gif[/img] K[img]/images/graemlins/spade.gif[/img] ($12, 2 players)
Hero checks, <font color="#cc0000">SB bets $12</font>, Hero calls.

Turn: 3[img]/images/graemlins/spade.gif[/img] ($36, 2 players)
Hero checks, SB checks.

River: K[img]/images/graemlins/diamond.gif[/img] ($36, 2 players)
<font color="#cc0000">Hero bets $25</font>, <font color="#cc0000">SB raises to $50</font>, Hero calls?