/usr/share/vtk/Modelling/ is in vtk-examples 5.8.0-14.1ubuntu3.
This file is owned by root:root, with mode 0o755.
..
/usr/share/vtk/Modelling/Cxx/
/usr/share/vtk/Modelling/Cxx/CMakeLists.txt
/usr/share/vtk/Modelling/Cxx/Delaunay3D.cxx
/usr/share/vtk/Modelling/Cxx/Delaunay3DAlpha.cxx
/usr/share/vtk/Modelling/Cxx/TestDelaunay3D.cxx
/usr/share/vtk/Modelling/Cxx/TestDelaunay3DAlpha.cxx
/usr/share/vtk/Modelling/Cxx/TestFinance.cxx
/usr/share/vtk/Modelling/Cxx/finance.cxx
/usr/share/vtk/Modelling/Python/
/usr/share/vtk/Modelling/Python/DelMesh.py
/usr/share/vtk/Modelling/Python/Delaunay3D.py
/usr/share/vtk/Modelling/Python/PerlinTerrain.py
/usr/share/vtk/Modelling/Python/SpherePuzzle.py
/usr/share/vtk/Modelling/Python/constrainedDelaunay.py
/usr/share/vtk/Modelling/Python/expCos.py
/usr/share/vtk/Modelling/Python/faultLines.py
/usr/share/vtk/Modelling/Python/hello.py
/usr/share/vtk/Modelling/Python/iceCream.py
/usr/share/vtk/Modelling/Python/procrustesAlignment.py
/usr/share/vtk/Modelling/Python/reconstructSurface.py
/usr/share/vtk/Modelling/Tcl/
/usr/share/vtk/Modelling/Tcl/DelMesh.tcl
/usr/share/vtk/Modelling/Tcl/Delaunay3D.tcl
/usr/share/vtk/Modelling/Tcl/PerlinTerrain.tcl
/usr/share/vtk/Modelling/Tcl/SpherePuzzle.tcl
/usr/share/vtk/Modelling/Tcl/constrainedDelaunay.tcl
/usr/share/vtk/Modelling/Tcl/expCos.tcl
/usr/share/vtk/Modelling/Tcl/faultLines.tcl
/usr/share/vtk/Modelling/Tcl/hello.tcl
/usr/share/vtk/Modelling/Tcl/iceCream.tcl
/usr/share/vtk/Modelling/Tcl/procrustesAlignment.tcl
/usr/share/vtk/Modelling/Tcl/reconstructSurface.tcl