/usr/share/sagemath/ellcurves/rank7 is in sagemath-database-elliptic-curves 0.8-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 | 382623908456 a 1 [0,0,0,-10012,346900] 7 1
536670340706 a 1 [1,0,1,-14733,694232] 7 1
814434447535 a 1 [0,0,1,-36673,2704878] 7 1
858426129202 a 1 [1,-1,0,-92656,10865908] 7 1
896913586322 a 1 [1,-1,0,-18664,958204] 7 1
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