which builder of usns lt . george w . g . boyce isalso place of birth of the mason verger ?
SELECT DISTINCT var_uri where brack_open dbr_USNS_Lt._George_W._G._Boyce_ attr_open T-AK-251 attr_close dbo_builder var_uri sep_dot dbr_Mason_Verger dbo_birthPlace var_uri brack_close