0000922907-06-000134 SC 13G 1 20060210 20060210 TORTOISE CAPITAL ADVISORS LLC 0001280965 223875939 KS 1231 SC 13G 233 WEST 47TH STREET OLVERLAND PARK KS 66212 MAGELLAN MIDSTREAM PARTNERS LP 0001126975 4610 731599053 DE 1231 SC 13G 34 005-61147 06598142 ONE WILLIAMS CENTER, MD 28-1 TULSA OK 74172 918 574 7000 ONE WILLIAMS CENTER, MD 28-1 TULSA OK 74172 WILLIAMS ENERGY PARTNERS L P 20001024 SC 13G 1 sch13g_020306.htm SC 13G