possessive dilemma

0Hi,02br
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00I think I have asked some questions on this in the past but let me indulge on this once more if you may.02br
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00Possessives are made when a thing/person belongs to a thing/person, I think, and that usually means it can be translated into the 'of' construction (see No 1 below) but I think GG said some phrases are deceiving in that they are not saying they belong to something but rather they are consisted of some things or more likely, some persons (see No. 2 below). But there seems to be a third class of interpretation in that some things don't fit to eithr of those categories. Can I make phrases belonging to the third category possessive?02br
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001. my father's bike -- the bike of my father (Definite a possessive case)02br
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002. attendees room -- the/a room consisted of attendees?? (Not-so-definite case) 02br
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003. provide 01u00debaters feedback02u00 -- the feedback by/of the debaters (No possessive case??) 0-