"By whom were these rules assessed?"

Translation: Bu kurallar kim tarafından belirlendi?

[SheridanZhoy]

I am having a lot of trouble with the grammar here. The closest thing I can get it to translate to is, "Who from their side were these rules determined?" Clearly there is a gap to be bridged.

Wouldn't kimin tarafından make more sense? Like, "from whose side"?
And doesn't belirlenmek mean "to be determined"?

[Selcen_Ozturk]

kim tarafından is used interchangably with kimin tarafından. I guess it is because we say "benim tarafımdan, senin tarafından" etc but "Ahmet tarafından, Ayşe tarafından" etc.

belirlemek is both to assess and to determine

[SheridanZhoy]

That's also true for için, right? "Benim için," "Aysun için."
Is "kim için" interchangeable with "kimin için"?

[mizinamo]

"Tarafından" is also used to denote the agent in a passive sentence, so "kim tarafından (Ahmet tarafından, benim tarafımdan)" are not "from whose (Ahmet's, my) side" but "by whom (Ahmet, me)".

[rirenmargo]

Dear Philip, Benim tarafından or tarafındam?

[mizinamo]

Neither, I think - I believe it should be benim tarafımdan (the -ım for "my" goes after taraf, the -dan for "from" stays the same). As Selcen also wrote above.

Thanks for spotting the mistake!

I've edited my comment.

(benim tarafından which I had previously written is also found on a Google search, though.)

[p_karp]

Could "kimden" be used or is "kim tarafindan" always used to say "By whom"?

[hafidha725910]

I didn't understand why we have to say "kim tarfindan" ??? Please help!!

[Cachaji]

Mizinamo explained it in an older post. I'll try to say it differently. When a sentence is in the passive form, instead of saying: "Somebody does something", you say "something is done by somebody". To point out by whom something is done (in Mizinamo's words: who/what is the agent = commands the action), in Turkish you use tarafında. Thus "something is done by Ahmet" is "Ahmet tarafinda bir şey yapılır". I hope it helps.

[GregoryLCh]

Bu kurallar kimin tarafından belirlendi?

is accepted (as suggested by the previous discussion).

Kim tarafından bu kurallar belirlendi?

is not accepted. This has a different emphasis but I don't see anything in the English to suggest one rather than the other.

[NoraDereli]

Another horrıble sentence