----------------------------------------
|context> => |context: greetings play>

hello |*> #=> merge-labels(|Hello, > + |_self> + |!>)
hey |*> #=> merge-labels(|Hey Ho! > + |_self> + |.>)
wat-up |*> #=> merge-labels (|Wat up my homie! > + |_self> + | right?>)
greetings |*> #=> merge-labels(|Greetings fine Sir. I believe they call you > + |_self> + |.>)
howdy |*> => |Howdy partner!>
good-morning |*> #=> merge-labels(|Good morning > + |_self> + |.>)
gday |*> #=> merge-labels(|G'day > + |_self> + |.>)
random-greet |*> #=> apply(pick-an-element-from the-list-of |greetings>,|_self>)

the-list-of |greetings> => |op: hello> + |op: hey> + |op: wat-up> + |op: greetings> + |op: howdy> + |op: good-morning> + |op: gday>

friends-of |Sam> => |Charlie> + |George> + |Emma> + |Jack> + |Robert> + |Frank> + |Julie>
friends-of |Emma> => |Liz> + |Bob>

the-friends-of |*> #=> list-to-words friends-of |_self>
----------------------------------------