What is the sentiment of this news? Please choose an answer from {strong negative/moderately negative/mildly negative/neutral/mildly positive/moderately positive/strong positive}.
Text: #Plug Power CEO Andy Marsh joins Yahoo Finance Live anchor Akiko Fujita to discuss the company's deal with Walmart to provide a network for hydrogen trucks and the state of the green energy shift amid the Russia-Ukraine war.
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moderately positive
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