which museum exhibits the annunciation by filippo lippi ?
select distinct var_uri where brack_open dbr_Annunciation_ attr_open Filippo_Lippi,_London attr_close dbo_museum var_uri sep_dot dbr_Annunciation_ attr_open Filippo_Lippi,_London attr_close dbo_author dbr_Filippo_Lippibrack_close