...
"total_num_of_dag_blocks": 268 + 436 + 316 + 316 = 1336, "total_num_of_dag_courses": 14 + 15 + 24 + 10 = 63, "total_num_of_dag_customtag": 2 + 7 + 34 + 5 = 48, "total_num_of_dag_discussion": 82 + 275 + 158 + 205 = 720, "total_num_of_dag_html": 161 + 131 + 121 + 100 = 513, "total_num_of_dag_vertical": 22 + 22 + 3 + 6 = 53,}
{ "courses": { "BerkeleyX/CS184.1x/2013_Spring": {...