# containers

create suitcase
set suitcase is_thing
set suitcase is_container

create container
set container is_thing
set container is_container

create box
set box is_thing
set box is_container

create "treasure chest"
set "treasure chest" is_thing
set "treasure chest" is_container

create "box of chocolates"
set "box of chocolates" is_thing
set "box of chocolates" is_container
set "box of chocolates" size 1

create chocolate
set chocolate is_thing
set chocolate size 0.5