▁al chem ists ▁Category : 1 7 th - century ▁phil anth rop ists <0x0A> </s> ▁The ▁S érie ▁ 9 7 0 0 ▁were ▁a ▁type ▁of ▁dies el ▁multiple ▁unit ▁train ▁used ▁by ▁the ▁Portuguese ▁Rail ways ▁( CP ) ▁on ▁met re ▁gauge ▁lines , ▁including ▁the ▁T ua ▁line ▁and ▁C org o ▁line . ▁They ▁were ▁originally ▁built ▁by ▁ Đ uro ▁ Đ ak ović ▁in ▁the ▁ 1 9 6 0 s ▁for ▁use ▁on ▁ 7 6 0   mm ▁gauge ▁rail ways ▁in ▁Y ug oslav ia . ▁They ▁were ▁purchased ▁second hand ▁by ▁CP ▁from ▁the ▁Y ug oslav ▁Rail ways ▁in ▁ 1 9 8 0 ; ▁for ▁use ▁in ▁Portugal ▁they ▁had ▁to ▁be ▁reg aug ed . ▁ ▁They ▁frequently ▁proved ▁un re li able ▁in ▁service ▁and ▁several ▁were ▁substantial ly ▁re built , ▁with ▁new ▁engines . ▁The ▁trains ▁were ▁nick named ▁X ep as , ▁after ▁the ▁un fortun ate ▁principal ▁character ▁on ▁the ▁Brazil ian ▁com edic ▁soap ▁opera ▁D ona ▁X ep a ▁broadcast ▁on ▁Portuguese ▁television . ▁ ▁The ▁ch ass is ▁of ▁several ▁vehicles ▁have ▁surv ived ▁and ▁were ▁extens ively ▁re built ▁in ▁the ▁mid - 1 9 9 0 s , ▁with ▁new ▁body work , ▁and ▁were ▁rec lass ified ▁as ▁S érie ▁ 9 5 0 0 . ▁These ▁re built ▁rail c ars ▁are ▁now ▁used ▁on ▁the ▁Metro ▁de ▁Mir and ela . ▁The ▁rest ▁of ▁the