Nominal copular sentences [DP V DP] can be distinguished in: canonical (1) [DPsubject copula DPpredicate] and inverse [DPpredicate copula DPsubject](2) [1]. (1) [DP_subj The picture of the wall]a is [SmallClause ta [DP_pred the cause of the riot]]. (2) [DP_pred The cause of the riot]b is [Small Clause [DP_subj the picture of the wall] tb] The aim of this study is to test whether the extraction from the DP predicate is really perceived as more acceptable (Moro 1997) than the extraction from the DP subject and whether in inverse copular constructions the extraction from the (raised) DP predicate is banned. In Italian, unlike English, the copula always agrees with the DP subject (even if the DP subject is postverbal). Our hypothesis is that i) agreement with the DP subject (only in canonical sentences) and ii) the argumental (i.e. subject) vs predicative status of the DPs from which the wh- element is extracted should influence both the online and the offline performance of native Italian speakers. An Acceptability Judgement Task (AJT) and a Self-Paced Reading (SPR) experiment with a Sentence Comprehension Task were conducted.results show that copular type (Canonical vs Inverse) plays a role both in acceptability (higher acceptability for canonical) and RTs (higher reading times at the verb region for Inverse), while the extraction site (predicate vs subject) has a clear effect in the comprehension of the sentence, accuracy is higher for extraction from predicates.