About omitting relative pronouns

[youngbut]

Hello everyone!

While I was watching Toy story3, i got the sentence below.

1. Any prisoner misses roll call, spends the night in the box.
2. Any prisoner talks back, spends the night in the box.


I think the orginal sentence seems 'Any prisoner who misses roll call spends the night in the box'. What I wonder is whether #1 and #2 also are possible. I have known objective relative pronoun can be omitted, but subjective relative pronoun usually can not be. But in the movie there is, so I am confused.



Many thanks in advance!

[philo2009]

The omission of subject relatives occurs occasionally in informal speech.