The second story is that prefer to sleep late, wake up call, because it benefits not available to take the sleep late wake up call. That woke up late may be a lazy day, or wake up because it has a 2 hour afternoon study.
The second is like to sleep late. Because of the time it does not benefit as a result, sleep late. Waking up late may be due to lazy or are studying at one o'clock.
The second story is like to sleep late late Since leisure no benefit at all as a result sleep late. That too late because of lazy up or that are studying at 1pm.