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Sylvia Okkerse: Münsterland
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Sylvia Okkerse: Ulm cathedral
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Sylvia Okkerse: Ulm cathedral
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Sylvia Okkerse: historical Ulm,Germany
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Sylvia Okkerse: thunderstorm approaching
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Sylvia Okkerse: the main tower in evening light
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Sylvia Okkerse: two concrete structures at the Autobahnkirche