Lambda:Rule idea

[a lambda:Rule;
lambda:rule set_homepage;
lambda:args (:nick,:uri); lamba:string "^addturtle [a foaf:Person; foaf:nick :nick; foaf:homepage :uri]."]

where lamba:rule is the name of the rule, lambda:args is a list of the args and lamba:string is the string to replace the args with. That could be used to define the rules in turtle