text 851 710 1507 1970
text 150 1685 812 1980
abstract 206 707 751 1193
text 151 1460 806 1590
equation 405 1385 805 1431
text 151 1266 628 1354
equation 328 1622 805 1653
title 244 250 1412 291
title 154 394 1488 624