fix on moments

nba_tracking_data_15_16.py

@@ -180,7 +180,11 @@ class NbaTracking(datasets.GeneratorBasedBuilder):
                             "quarter": moment[0],
                             "game_clock": moment[2],
                             "shot_clock": moment[3],
-                            "ball_coordinates": moment[5][0][2:],
+                            "ball_coordinates": {
+                                "x": moment[5][0][2],
+                                "y": moment[5][0][3],
+                                "z": moment[5][0][4]
+                            },
                             "player_coordinates": [
                                 {
                                     "teamid": i[0],