Read this: The core culture or Pengngan Chamorro is based on complex social protocol centered upon respect: From sniffing over the hands of the elders (called mangnginge in Chamorro), the passing down of legends, chants, and courtship rituals, to a person asking for permission from spiritual ancestors before entering a jungle or ancient battle grounds. Other practices predating Spanish conquest include galaide' canoe-making, making of the belembaotuyan (a string musical instrument made from a gourd), fashioning of åcho' atupat slings and slingstones, tool manufacture, Måtan Guma' burial rituals, and preparation of herbal medicines by Suruhanu.

Which culture involves sniffs the feet of elders?
What is the answer? (If it cannot be answered, return "unanswerable")
unanswerable