situation_id,scen_1_need,scen_1_endowment,scen_2_need,scen_2_endowment
1,1000,400,200,?
2,1000,400,400,?
3,1000,400,600,?
4,1000,400,800,?
5,1000,400,1000,?
6,1000,400,1200,?
7,1000,400,1400,?
8,1000,400,1600,?
9,1000,400,1800,?
10,1000,400,2000,?