Table:
text: 2001–02 Boston Celtics season
Playoffs
Conference Finals
Game Date_ Team Score High_points High_rebounds High_assists Location_Attendance Series
1 May 19 @ New Jersey Nets L 97-104 P. Pierce , A. Walker (27) T. Battie (11) K. Anderson (6) Continental Airlines Arena 0-1
2 May 21 @ New Jersey Nets W 93-86 A. Walker (26) P. Pierce (14) K. Anderson (7) Continental Airlines Arena 1-1
3 May 25 New Jersey Nets W 94-90 P. Pierce (28) A. Walker (12) P. Pierce , A. Walker (4) FleetCenter 2-1

Question: Name the May 21 high assists for the 2001-02 Conference Finals, the Boston Celtics' playoff season. ?