Crossword Genius

To sift the remains can be something instructive (7)

Ross

I believe the answer is:

seminar

I'm a little stuck... Click here to teach me more about this clue!

'be something instructive' is the definition.
I can't judge whether this defines the answer.

'to sift the remains' is the wordplay.
'to sift' is an anagram indicator (I've seen 'sifted' mean this).
'remains' is an anagram of 'SEMINAR'.

'can' is the link.

Can you help me to learn more?

(Other definitions for seminar that I've seen before include "University discussion" , "Group discussion of subject" , "Meeting for exchange of ideas" , "Teaching meeting, conference" , "Academic class" .)

I've seen this clue in the Evening Standard.
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