for how many movies have the music composer composed music , who have collaborated with ringo starr & his all-starr band ?
SELECT DISTINCT COUNT attr_open var_uri attr_close where brack_open var_x dbo_associatedMusicalArtist dbr_Ringo_Starr_&_His_All-Starr_Band sep_dot var_uri dbo_musicComposer var_x sep_dot var_uri a dbo_Film brack_close