of line 27b Exempt foreign organtiaticns enter 4% of Part I, Me IZ col (b) 2 Tax under section 511 (domestic section 4947(a)(1) trusts and taxable Icundabons only Others aster -0-) 3 Add lines 1 and 2 , 4 Subtitle A (Income) tax (domestic section 4947(a)(1) trusts and taxable foundations only Others