Original: In 1769 the Scottish geographer Alexander Dalrymple, whilst translating some Spanish documents captured in the Philippines in 1752, had found Luis Váez de Torres' testimony proving a passage south of New Guinea now known as Torres Strait.
Simplified: In 1769 the Scottish geographer Alexander Dalrymple, was translating Spanish documents captured in the Philippines in 1752. He found Luis Váez de Torres' description of a passage south of New Guinea now called Torres Strait.