0	0.37256	data social information archives science national records archive 
1	0.1133	data metadata ddi documentation quarterly iassist variables model 
2	0.37483	data information users system user access files use 
3	0.16049	data iassist management quarterly repositories preservation repository science 
4	0.16821	census survey data statistics population sample surveys health 
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6	0.04741	data tion ing sophie dbf center pro social 
7	0.17782	data students literacy education analysis science library information 
