| http://www.w3.org/ns/prov#value | - lanted during 2011.Under the Billion Tree Campaign, individuals and organisations, including youth groups, schools, businesses or national governments, can pledge to plant trees on the campaign website: www.unep.org/billiontreecampaign Pledges range from a single tree to several million trees.The responsibility for planting the tree lies with the individual or organisation.
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