NL 100 FR: fold TPTK in reraised Pot?

[Sebi]

Hi, keine reads oder PT daten uber Villian. Call ich hier den river oder folde ich sogar schon am turn?

Poker Stars - No Limit Hold'em Cash Game - $0.50/$1 Blinds - 6 Players - (LegoPoker Hand History Converter)

SB: $37.55
Hero (BB): $103.05
UTG: $106.65
MP: $34.90
CO: $40.50
BTN: $231.10

Preflop: Hero is dealt K[img]/images/graemlins/heart.gif[/img] A[img]/images/graemlins/heart.gif[/img] (6 Players)
<font color="red">UTG raises to $3.00</font>, 3 folds, SB calls $2.50, <font color="red">Hero raises to $11.00</font>, UTG calls $8.00, SB folds

Flop: ($25) 7[img]/images/graemlins/heart.gif[/img] T[img]/images/graemlins/club.gif[/img] K[img]/images/graemlins/spade.gif[/img] (2 Players)
<font color="red">Hero bets $17.50</font>, UTG calls $17.50

Turn: ($60) J[img]/images/graemlins/club.gif[/img] (2 Players)
Hero checks, <font color="red">UTG bets $20.00</font>, Hero calls $20.00

River: ($100) 6[img]/images/graemlins/diamond.gif[/img] (2 Players)
Hero checks, <font color="red">UTG bets $30.00</font>, Hero???