Complex sentence: Their equipment was not returned and a rigid inflatable boat (RIB) was put on display in a museum in Tehran.They appeared blindfolded on Iranian TV, where they apologised for their "mistake".
Split into simpler sentences: Their equipment was not returned and a rigid inflatable boat (RIB) was put on display in a museum in Tehran. They also appeared blindfolded on Iranian TV, where they apologised for their "mistake".