;; definite and indefinite, but not partitive articles
(define article '(or "the" "a" "an"))
-(define preposition '(or "with" "in" "on" "out of" "at" "as"))
+(define preposition '(or "with" "in" "on" "out of" "at" "as" "to"
+ "about"))
(define indirect-irx
(sre->irregex