Input text: clear ground. sky is gray. a 7 foot wide clear chair. a gray professor is -3 feet above and -4 feet in front of the chair. its shirt is gray. its necktie is gray. its mustache is gray. its hair is gray. its beard is gray. a large gray dog is -2 foot left of the professor.
a lavender light is 7 feet left of and -1 foot above the professor.