Content interrogatives of DGS are typically marked non-manually with furrowed eyebrows and a slight head tilt forward, sometimes accompanied by a forward body lean for stronger emphasis.
These non-manual markings usually spread throughout the whole content interrogative. But it is also possible that non-manual markers spread only over the wh-sign at the end of the interrogative phrase, when the wh-sign is positioned at the end of the phrase.
wh
topic what
‘What is the topic?’
In some cases, raised eyebrows can also accompany content interrogatives, changing the meaning to a notion of disbelief. In these cases, the function of the interrogative sentence is not to get an answer to what is questioned, but rather showing that one can’t believe a specific information about participants or settings, that has already been shared.
re
election win who
‘Who won the election?!’