1. https://maproulette.org/browse/challenges/27414

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  2. https://maproulette.org/browse/challenges/27414

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  3. https://maproulette.org/browse/challenges/27414

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  4. add layer to bridges/tunnels in Austria #maproulette

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  5. Add residential buildings #maproulette

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  6. Add residential buildings #maproulette

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  7. Add residential buildings #maproulette

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  8. Add residential buildings #maproulette

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  9. Add residential buildings #maproulette

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  10. Add residential buildings #maproulette

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  11. Add residential buildings #maproulette

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  12. Add residential buildings #maproulette

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  13. Add residential buildings #maproulette

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  14. Add residential buildings #maproulette

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  15. Add residential buildings #maproulette

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  16. Add residential buildings #maproulette

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  17. Add residential buildings #maproulette

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  18. Add residential buildings #maproulette

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  19. Add residential buildings #maproulette

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  20. Add residential buildings #maproulette

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