Hand converted with online PokerStrategy.com hand converter:
$0.5/$1 Fixed-Limit Hold'em (6 handed)
Preflop: Hero is BU with K:c, A:c.
3 folds, Hero raises, SB calls, BB folds.
Flop: (5 SB) 2:s, A:d, 7:c (2 players)
SB checks, Hero bets, SB calls.
Turn: (3.5 BB) 9:h (2 players)
SB checks, Hero bets, SB raises, Hero 3-Bets, SB caps, Hero calls.
River: (11.5 BB) J:s (2 players)
SB bets, Hero calls.
Final Pot: 13.5 BB.
Villain is unknown
I think I can 3-bet without a problem the turn, because it would be too weak just to call his c/c,c/r. After the cap ugly call on the river I suppose.