/*Maps current topic to its parent: "topicIndex:parentIndex". -1 represents the map.*/
var linkToParent = {314:319,245:5,428:429,109:113,99:95,196:195,275:278,403:404,194:198,65:118,77:70,334:338,360:362,225:227,205:209,85:70,181:188,15:-1,414:410,260:261,179:188,271:274,285:290,297:300,238:239,437:440,224:227,333:331,456:461,70:-1,292:308,400:404,163:164,359:362,338:5,447:455,274:278,265:269,266:269,78:70,335:338,313:5,365:368,175:174,455:5,58:60,374:378,261:3,146:164,401:404,208:209,305:306,300:3,147:164,445:3,202:209,141:139,315:319,393:395,370:368,75:23,187:188,373:378,96:95,161:144,424:429,57:60,371:372,282:284,112:113,189:192,251:259,328:330,39:41,182:183,132:131,34:70,425:429,86:70,162:164,269:1,436:119,358:362,408:407,101:95,105:108,114:117,318:319,273:274,212:215,242:239,214:215,45:119,197:195,444:445,317:319,440:441,357:362,405:407,63:65,98:95,361:362,406:407,319:119,64:65,461:119,154:164,367:368,203:204,254:253,195:-1,364:372,419:2,432:435,438:440,422:429,113:1,115:117,95:119,184:188,268:269,156:164,168:55,66:65,188:3,178:5,435:1,185:183,264:269,380:119,213:215,434:435,73:23,106:108,116:117,232:231,89:70,420:429,102:95,74:89,243:244,111:113,191:192,3:118,204:209,332:331,459:461,210:215,294:300,321:319,404:1,389:387,267:269,198:195,4:118,252:259,246:245,19:29,382:386,451:455,120:128,190:192,237:244,388:387,348:350,255:253,122:128,50:119,82:78,35:33,446:445,107:108,17:41,127:128,383:386,100:95,62:65,337:338,239:244,138:139,32:34,327:330,362:1,407:4,119:-1,211:215,460:461,385:386,134:131,336:338,68:85,439:440,166:55,67:85,308:3,450:451,28:41,443:445,386:2,322:330,289:308,363:372,131:133,349:350,223:227,61:18,390:387,90:89,249:259,326:330,151:144,215:1,209:3,21:41,20:41,325:330,394:396,276:278,174:178,452:451,94:119,288:308,423:424,296:300,135:133,378:1,421:424,42:196,118:-1,454:455,316:319,387:119,44:119,381:386,458:461,396:390,18:29,270:278,125:123,298:296,199:195,155:156,124:128,347:350,33:41,170:178,192:4,449:455,87:70,277:278,457:461,29:41,222:227,133:5,183:188,240:244,128:1,323:324,415:410,136:133,384:386,38:21,25:41,218:221,1:118,250:259,207:204,409:410,55:119,176:174,331:324,30:21,426:424,441:1,293:290,40:18,2:118,26:29,376:378,22:41,346:350,369:368,330:324,413:410,177:178,41:-1,411:410,200:204,167:55,23:41,16:41,219:221,130:133,350:2,46:45,236:239,302:306,343:345,231:235,180:183,206:204,142:139,49:45,342:345,281:284,59:60,47:45,442:445,241:239,301:306,31:33,144:164,216:221,27:41,220:221,69:85,80:78,356:1,91:94,448:451,76:89,412:410,324:-1,81:78,217:221,329:330,37:41,54:55,372:5,287:290,171:174,247:245,173:174,391:395,83:78,259:261,228:235,160:164,143:148,235:1,341:345,153:154,79:78,53:55,140:139,340:345,263:261,126:123,291:290,427:424,24:89,117:4,97:95,172:178,72:89,169:167,311:313,279:284,353:356,431:435,221:1,283:284,344:345,399:404,56:60,43:21,108:1,165:55,234:235,150:164,230:235,60:3,280:284,295:300,354:356,253:261,429:5,272:274,92:94,397:395,152:78,307:308,306:3,164:3,377:378,257:261,278:5,52:55,244:3,71:89,395:390,123:128,5:118,137:139,48:45,93:94,304:306,149:144,418:419,262:261,290:308,158:144,201:204,416:419,392:396,368:372,110:113,366:372,248:18,351:356,339:338,256:261,379:378,402:404,433:435,309:313,303:306,103:108,145:164,310:313,320:319,430:435,284:3,88:70,157:144,410:2,121:123,129:131,233:231,84:78,226:227,229:231,453:451,355:356,159:148,398:396,193:198,352:356,36:34,299:300,148:164,312:313,104:108,186:183,417:419,345:1,258:261,227:5,375:378};