Datapoint Sango/Indefinite pronouns
The only equivalents I know of are with the "indefinite article" (for which see the appropriate value). For 'something' one says 'some thing' and for 'someone' one says 'some person.'
Values 
Generic-noun-based indefinites
- Example 59-77:
-
mbeni zo aga ti baa mombenisomezopersona-gapm-cometitobaaseemo2sgSomeone came to see you. OR: Someone has come to see you.
- Example 59-78:
-
mo wara mbeni yi na ya ni?mo2sgwarafindmbenisomeyithingnaprepyabellyni?detDid you find something inside?
- Example 59-79:
-
mbeni yi laa asara lo a legembenicertainyithinglaafoca-sarapm-dolo3sgnapreplegepath(Perhaps) something happened to her on the way.French: Quelque chose lui serait arrivé en route.
Source: nd
- Example 59-80:
-
ambeni avo karakoa-mbenipl-certaina-vopm-buykarakopeanutsSome buy peanuts.
- Example 59-81:
-
Mbeni, lo ken' ti sara ngia na koli ni.Mbeni,somelo3sgken'refusetitosaramakengiapleasurenawithkolimanni.detAnother one, she refuses to chat with her husband.
Source: Samarin 1967: 61
- Example 59-82:
-
Mbeni mbakoro wale aeke.mbenisomembakorooldwalewomana-ekepm-copThere was an old woman.
Source: Samarin 1967: 60
- Confidence:
- Very certain