The joint US-Australian study, released at the American Association for the Advancement of Science annual meeting, analysed waste production data from 192 countries to conclude that between 4.8 million and 12.7 million tonnes of "mismanaged plastic" entered the oceans in 2010. 这句话中analysed是谓语，那released和conclude是谓语吗？这两个动词作什么成分啊？谢谢解答！