Cubs fans have paper bags on their heads that spell out "CUBS."
Cubs fans hebben papieren zakken op hun hoofd die spellen "CUBS."
The fans have nothing on their heads.
De fans hebben niets op hun hoofd.
The fans have paper bags on their heads so there is something on their heads as opposed to nothing.
De fans hebben papieren zakken op hun hoofd dus er is iets op hun hoofd in tegenstelling tot niets.