<s>[INST] How was the Andharkota (Kushtia-Nadia) area demarcated according to the agreement? [/INST] The Andharkota (Kushtia-Nadia) area was demarcated according to the agreement by drawing the boundary from existing Boundary Pillar No. 152/5-S to Boundary Pillar No. 153/1-S along the edge of the existing River Mathabanga, as jointly surveyed and agreed upon in June, 2011. </s>