Complex sentence exploration : miscellaneous

Students found some interesting complex sentences in their reading.  Some were difficult to categorise, and some were just plain difficult.  Read the 5 examples below, and leave a comment telling me a) what types of complex structure you find in each sentence, and b) if you think any of these sentences are particularly difficult to understand.

1. Nowhere in the convention is it stipulated that one candidate belonging to the sex which is under-represented in the court must feature in the list.
2. Several protestors, former Conservative voters, declared themselves as having been “pushed to the left” by their experiences.
3. Others mentioned the issue of live exports as only one of the reasons why they felt they had to be there.
4. Foreign language educationalists and cultural linguists believe that foreign language learning cannot occur properly unless the socio-cultural aspect of the foreign language is learnt simultaneously because the mere acquisition of linguistic competence is not enough.
5. This study also hypothesizes that raising high school EFL teachers’ awareness of the autonomous and ideological concepts of communicative competence is likely to help them see their teaching activities lean towards the autonomous model of communicative competence.