Explain villain's thought process?

[Nonfiction]

PokerStars No-Limit Hold'em, $0.25 BB (5 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

BB ($36.60)
UTG ($24.80)
MP ($9.10)
Hero ($64.25)
SB ($25.70)

Preflop: Hero is Button with J[img]/images/graemlins/spade.gif[/img], K[img]/images/graemlins/spade.gif[/img].
UTG calls $0.25, <font color="#CC3333">MP raises to $0.5</font>, Hero calls $0.50, <font color="#666666">1 fold</font>, BB calls $0.25, UTG calls $0.25.

Flop: ($2.10) 7[img]/images/graemlins/spade.gif[/img], J[img]/images/graemlins/club.gif[/img], J[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(4 players)</font>
BB checks, <font color="#CC3333">UTG bets $0.5</font>, MP folds, Hero calls $0.50, BB folds.

Turn: ($3.10) 5[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">UTG bets $0.5</font>, <font color="#CC3333">Hero raises to $2</font>, <font color="#CC3333">UTG raises to $3.5</font>, <font color="#CC3333">Hero raises to $11</font>, <font color="#CC3333">UTG raises to $21.5</font>, <font color="#CC3333">Hero raises to $35</font>, UTG calls $5.30 (All-In).

River: ($64.90) T[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players, 1 all-in)</font>

Final Pot: $64.90

Results in white below: <font color="#FFFFFF">
UTG has As 4s (one pair, jacks).
Hero has Js Ks (three of a kind, jacks).
Outcome: Hero wins $64.89. </font>