I am still learning omaha, but how does he call my all-in here????

Stage #783633016: Omaha Pot Limit $4 - 2007-10-07 20:46:00.015 (ET) [ 2007-10-07 20:46:00 ]
Table: IVY Dr (Real Money) Seat #1 is the dealer
Seat 1 - ZIVAGO ($423.50 in chips)
Seat 2 - QU33NBEE ($726 in chips)
Seat 4 - JUNIORSDAD ($1212 in chips)
Seat 5 - BEEMERBOOM ($471 in chips)
Seat 6 - MAYNRDKEENAN ($153 in chips)
QU33NBEE - Posts small blind $2
JUNIORSDAD - Posts big blind $4
*** POCKET CARDS ***
Dealt to MAYNRDKEENAN [Ad Ac 7s 10c]
BEEMERBOOM - Calls $4
MAYNRDKEENAN - Calls $4
ZIVAGO - Raises $12 to $12
QU33NBEE - Folds
JUNIORSDAD - Calls $8
BEEMERBOOM - Calls $8
MAYNRDKEENAN - Raises $56 to $60
ZIVAGO - Calls $48
JUNIORSDAD - Calls $48
BEEMERBOOM - Folds
*** FLOP *** [Kh 8c Ah]
JUNIORSDAD - Checks
MAYNRDKEENAN - All-In $93
ZIVAGO - Calls $93
JUNIORSDAD - Folds
*** TURN *** [Kh 8c Ah] [Qc]
*** RIVER *** [Kh 8c Ah Qc] [6h]
*** SHOW DOWN ***
ZIVAGO - Shows [7h 6c 8h 6d] (Flush, ace high)
MAYNRDKEENAN - Shows [Ad Ac 7s 10c] (Three of a kind, aces)
ZIVAGO Collects $377 from main pot
*** SUMMARY ***
Total Pot($380) | Rake ($3)
Board [Kh 8c Ah Qc 6h]
Seat 1: ZIVAGO (dealer) won Total ($377) HI:($377) with Flush, ace high [7h 6c 8h 6d - B:Ah,B:Kh,P:8h,P:7h,B:6h]
Seat 2: QU33NBEE (small blind) Folded on the POCKET CARDS
Seat 4: JUNIORSDAD (big blind) Folded on the FLOP
Seat 5: BEEMERBOOM Folded on the POCKET CARDS
Seat 6: MAYNRDKEENAN HI:lost with Three of a kind, aces [Ad Ac 7s 10c - B:Ah,P:Ad,P:Ac,B:Kh,B:Qc]