/usr/bin/cat > ~/.local/share/nemo/actions/show_parent_package.nemo_action << "EOD"
[Nemo Action]
Name=Show _Parent Package
Comment=Display a dialogue that shows which package %F is from
Exec=<action_scripts/show_parent_package.sh %F>
Icon-Name=package-x-generic-symbolic
Selection=s
Extensions=any;
EscapeSpaces=true
Dependencies=zenity;dpkg;
EOD

mkdir -p ~/.local/share/nemo/actions/action_scripts
sudo apt-get install zenity

/usr/bin/cat > ~/.local/share/nemo/actions/action_scripts/show_parent_package.sh << "EOD"
#!/bin/dash
OUTPUT=$(dpkg -S "$1" | cut -f1 -d:)
if [ -z "$OUTPUT" ]; then
  zenity --info --ellipsize --text="$1\nis not provided by any known package"
else
  zenity --info --ellipsize --text="$1\nis from the package(s) $OUTPUT"
fi
EOD