Complex sentence: Later, Mirage, annoyed with Syndrome's selfishness, releases Bob and informs him that his family is alive, before Helen appears and races off with Bob to find the children when they are spotted by security.
Split into simpler sentences: Later, Mirage, annoyed with Syndrome's selfishness, releases Bob and informs him that his family is alive. Before Helen appears and races off with Bob to find the children when they are spotted by security.