CTLR REALIZES B747 ON SHORT FINAL HAS LINED UP TO LAND ON WRONG RWY AFTER CLRING B747 FOR TKOF ON SAME RWY.

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JFK LNDG VOR RWY 13L; DEPARTING RWY 13R. ACFT #1 CLRED TO LAND RWY 13L. ACFT #2 INSTRUCTED TO TAXI INTO POS AND HOLD RWY 13R; THEN CLRED FOR TKOF. AT THAT MOMENT; I OBSERVED ACFT #1 ON SHORT FINAL FOR RWY 13R. I INSTRUCTED ACFT #1 TO GO AROUND; WITH ACFT #2 EITHER OFF OR PARTIALLY ON RWY 13R. ACFT #2 HAD NOT BEGUN TKOF ROLL AND HAD STOPPED. I INSTRUCTED THEM TO HOLD POS. DURING ITS SECOND APCH; I CLRED ACFT #1 TO LAND RWY 13L. I PLACED ALL LIGHTS FOR RWY 13L ON STEP 5; AND TURNED OFF RWY 13R VASI. ACFT #1 AGAIN TURNED FINAL FOR RWY 13R. AS THERE WAS AN H/A310 IN POS ON RWY 13R; I INSTRUCTED ACFT #1 TO GO AROUND. ACFT #1 CREW APPEARED 'FLUSTERED;' AS THEY APPEARED TO TRACK HDG 090 DEGS WHEN INSTRUCTED TO TURN R 180 DEGS. DURING THIRD APCH; I KEPT ALL RWYS CLR AND ACFT LANDED RWY 13L. HISTORICALLY; FOREIGN CARRIERS HAVE HAD TROUBLE WITH LANGUAGE BARRIERS -- ESPECIALLY ASIAN CARRIERS. FATIGUE RESULTING FROM 2 QUICK TURN-AROUNDS AND COMPLACENCY RESULTED IN MY NOT SCANNING THE FINAL WHEN CLRING ACFT #2 FOR TKOF. I PUT FALSE TRUST IN ACFT #1 DOING WHAT THEY WERE CLRED TO DO; WHICH OBVIOUSLY THEY DID NOT.