Complex sentence: The Dire Straits Tour was the first concert tour by the British rock band Dire Straits, designed to promote and support the release of their debut album, "Dire Straits", which was released on 7 October 1978.
Split into simpler sentences: The Dire Straits Tour was the first concert tour by the British rock band Dire Straits. The tour promoted and supported the release of the band's debut album, "Dire Straits", which was released on 7 October 1978.