Pq: Dependent and independent polar questions are structurally identical.
(Q): The only structural difference between dependent and independent polar questions is the optional use of a question particle with the former.
(1a) xalewat jām tūrəm pit-ǝl?
tomorrow good weather begin-prs.3sg
‘Will the weather be nice tomorrow?’ (S. O.)
(1b) (luw) inśǝs-s-əlli xalewat jām tūrəm pit-ǝl.
(s)he ask-pst-obj.3sg tomorrow good weather begin-prs.3sg
‘(S)he asked whether the weather will be nice tomorrow.’ (F. L.)
(1c) amuj xalewat jām tūrəm pit-ǝl, luw inśǝs-s-əlli.
whether tomorrow good weather begin-prs.3sg (s)he ask-pst-obj.3sg
‘(S)he asked whether the weather will be nice tomorrow.’ (S. O.)
(2a) miša mēt-ǝs?
Misha tired-pst.3sg
‘Is Misha tired?’ (S. O.)
(2b) miša amuj mēt-ǝs, luw inśǝs-s-əlli.
Misha whether tired-pst.3sg (s)he ask-pst-obj.3sg
‘(S)he asked whether Misha was tired.’ (S. O.)
(2c) amuj mēt-ǝs, luw miša inśǝs-s-əlli.
whether tired-pst.3sg (s)he Misha ask-pst-obj.3sg
‘(S)he asked whether Misha was tired.’ (S. O.)
(3) (luw) inśǝs-s-əlli, mɔ̄jǝŋxu jik jiś-ǝl muj anta.
(s)he ask-pst-obj.3sg guest water drink-prs.3sg what maybe
‘(S)he asked whether the guest would drink water.’ (F. L.)