Question: Is the Sea of Japan landlocked within Japan?, Answer:No, Description of Sea of Japan: Marginal sea between Japan, Russia and Korea, Fact1: The sea of Japan touches Japan, Russia and the Koreas, Fact2: Japan has no landlocked sea
Step1: Which countries have a shoreline that touches the Sea of Japan?, Step2: Is Japan the only item in #1?, Wikipedia page for step 1: https://en.wikipedia.org/wiki/Sea_of_Japan, Wikipedia page for step 2: , not_definitive_answer: False, incorrect_answer: False