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The following question presents four statements, of which three, when places in appropriate order, would form a contextually complete paragraph. Pick the statement that is not part of the context.

1. The trade in iron ore make it the second-largest commodity market by value after crude oil.
2. The metal provides the backbone of skyscrapers, bridges and motorways, and the carapace and internal organs of cars, fridges and washing machines.
3. Given steel's ubiquity – it makes up $95 \%$ of global metal production – iron ore, the raw material from which it is made, attracts strangely little attention.
4. The development of a process to turn raw earth into steel merits a high spot on a list of mankind's most ingenious achievements.