I dunno. I would think it could have been three people who died at different times and were interred there, as Trinkaus (the discoverer of the "hybrid" child in Spain) stated that they had some kind of religious beliefs. The Neandertal also are known to have buried the dead with stuff they used in life, so maybe he based it on that? I do quibble with this:
"This was 25,000 years before agriculture. Certainly they were hunters," said Trinkaus. He said the bones were discovered in the foothills of the Carpathian Mountains.
The earliest (non-adjusted) radiocarbon dating of cultivated plant seeds (multirow barley) of which I've read is 14,000 years before present. I think there's a good possibility that ag is much older than that, but it's not likely that any evidence will ever be found. :')