(("book" ("at" ("book" ("of" (("lean") "cow" ("of" (("mean") "book"))))))) ("saw") (("mean" "lean" "mean") "Alice"))
((("lean" "lean") "Alice") ("found") (("lean") "book" ("at" (("lean" "lean" "lean") "book"))))
((("lean" "mean" "green" "green" "lean") "Alice") ("saw" "carefully") ("book" ("at" (("mean") "cow"))))
Input has invalid tokens.
(("cow" ("with" ("book"))) ("found") (("mean") "book"))
(("cow" ("at" (("mean") "cow"))) ("lifted") ("Alice" ("at" ("book" ("with" ("Alice"))))))
(("cow" ("with" ("book" ("at" ("cow"))))) ("saw" "carefully") (("lean") "cow"))
Input is not a sentence.