How would you play this hand, guys? Unknown villain...
PokerStars - $0.02 NL FAST (6 max) - Holdem - 6 players
Hand converted by PokerTracker 4
BTN: 155 BB
SB: 193.5 BB
BB: 111.5 BB
Hero (UTG): 234 BB
MP: 101 BB
CO: 111.5 BB
SB posts SB 0.5 BB, BB posts BB 1 BB
Pre Flop: (pot: 1.5 BB) Hero has K♥ Q♠
Hero raises to 2.5 BB, fold, fold, fold, SB calls 2 BB, fold
Flop: (6 BB, 2 players) T♦ 5♦ J♦
SB bets 3 BB, Hero calls 3 BB
Turn: (12 BB, 2 players) 9♥
SB bets 5 BB, Hero calls 5 BB
River: (22 BB, 2 players) 7♥
SB bets 19 BB, Hero??
What's the most profitable line? Call or raise?