It should be less wordy in order to improve readability. For example, "...tribe is likely to belong to the pano language group," could instead say, "...tribe likely belongs to the pano language group."
Topic on Comments:Brazil spots unknown tribe of indigenous people in Amazon jungle
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Ok. Thanks for your feedback. I tried to do my best while not copyvio the source. Maybe you should join the Newsroom and help copy edit articles before they are published.
I submitted your suggested copy edit. It has to be approved by a Reviewer.
Approved. Thanks everyone. :)
Thank you, Blood Red Sandman!