Complex sentence: Temple got her start in foreign service after her failed run for Congress in 1967, when Henry Kissinger overheard her talking about Namibia at a party; he was surprised that she knew anything about it.
Split into simpler sentences: Temple got her start in foreign service after her failed run for Congress in 1967 when Henry Kissinger overheard her talking about Namibia at a party. He was surprised that she knew anything about it.