which museum exhibits the portrait of maría teresa de borbón y vallabriga by francisco goya ?
select distinct var_uri where brack_open dbr_Portrait_of_María_Teresa_de_Borbón_y_Vallabriga dbo_museum var_uri sep_dot dbr_Portrait_of_María_Teresa_de_Borbón_y_Vallabriga dbo_author dbr_Francisco_Goyabrack_close