Complex sentence: Sturrock (2010: 163--165) Arriving in Washington a week later, Dahl found he liked the atmosphere of the U.S. capital, but was unimpressed by his office in the British Air Mission, attached to the embassy.
Split into simpler sentences: Sturrock (2010: 163--165) Arriving in Washington a week later, Dahl found he liked the atmosphere of the U.S. capital. He was unimpressed by his office in the British Air Mission, attached to the embassy.