Yes, woman is a riddle (5)

I believe the answer is:

sieve

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

'a riddle' is the definition.
(I've seen this before)

'yes woman' is the wordplay.
'yes' becomes 'si' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'woman' becomes 'Eve' (Eve is an example).
'si'+'eve'='SIEVE'

'is' is the link.

Can you help me to learn more?

(Other definitions for sieve that I've seen before include "Fine riddle" , "Colander" , "particle separator" , "Craft for Jumblies" , "Utensil with meshed bottom" .)

I've seen this clue in the Evening Standard.

Want a hint initially instead of a full solution? Install my app