Answer
Showing that the hare runs the sleepy tortoise is not a valid sentence.
Work Step by Step
The only way to get a noun, such as tortoise, at the end is to
have a noun phrase at the end,
--which can be achieved only via the production
sentence → noun phrase transitive verb phrase noun phrase.
- However, transitive verb phrase→ transitive verb→passes, and this sentence does not contain passes.
