figure 447 85 1251 351
text 297 1372 1403 1716
equation 591 1723 1401 1777
equation 434 1293 1401 1361
text 297 1192 1402 1283
equation 400 1113 1401 1184
text 297 554 1403 1106
caption 297 376 1402 541
text 297 1787 1402 1853
equation 551 1860 1401 1897