Misc: For what is the turner prize awarded?

Questions

in honour if ---------- vaaler, inventor of the paper clip, a 221/2 paper clip was erected in oslo, norway?

in ---------- exists a tribe of tall white people whose parrots are a warning sign against intruders?

in irian jaya exists a tribe of tall white people whose ---------- are a warning sign against intruders?

in paris, the mcdonalds big 'm' is the only one in the world that is---------- , rather than yellow, it was thought that yellow was too tacky?

in paris, the mcdonalds big 'm' is the only one in the world that is white, rather than yellow, it was thought that yellow was too----------?