obscure.01
frames- [ARGM-DIS But] [ARG0 the device] [rel obscures] [ARG1 more than it illuminates] .
- But the government now claims that [ARG0 a group of company managers and lawyers] engaged in an elaborate strategy *ICH*-1 over five years * to [rel obscure] from [ARG2-from federal authorities] [ARG1 the extent and details of `` widespread '' fraudulent billing practices] .
- The U.S. Coast Guard closed six miles of the Houston Ship Channel , where about 150 companies have operations *T*-1 , because [ARG0 the thick , black smoke] [rel obscured] [ARG1 the area] .