text 147 1806 814 1958
text 884 1200 1553 1958
text 885 152 1554 811
text 146 638 815 851
text 147 1670 815 1726
equation 183 262 781 619
text 147 155 816 247
equation 201 1295 764 1648
equation 276 1750 813 1784
text 148 1245 504 1275
equation 201 870 764 1223
figure 1027 843 1410 1007
caption 886 1042 1554 1162