Complex sentence: The nearest land is Ontong Java Atoll, located only 38 km to the south of Nukumanu, but the border between Papua New Guinea and the Solomon Islands runs between these neighboring atolls.
Split into simpler sentences: The nearest land is Ontong Java Atoll, located only 38 km to the south of Nukumanu. The border between Papua New Guinea and the Solomon Islands runs between these neighboring atolls.