Read this: The Tuvalu Media Department of the Government of Tuvalu operates Radio Tuvalu which broadcasts from Funafuti. In 2011 the Japanese government provided financial support to construct a new AM broadcast studio. The installation of upgraded transmission equipment allows Radio Tuvalu to be heard on all nine islands of Tuvalu. The new AM radio transmitter on Funafuti replaced the FM radio service to the outer islands and freed up satellite bandwidth for mobile services. Fenui news from Tuvalu is a free digital publication of the Tuvalu Media Department that is emailed to subscribers and operates a Facebook page, which publishes news about government activities and news about Tuvaluan events, such as a special edition covering the results of the 2015 general election.

Who gave financial support to Tuvalu to upgrade transmission equipment?
What is the answer? (If it cannot be answered, return "unanswerable")
Japanese government