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We've all done it on the pitch - the ball's gone past you, you're out of position, you stick your arm out, concede a free-kick and sometimes a yellow card.
BBC: The hand of Henry
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But if you starve them of possession, they get frustrated and can lose discipline and end up getting yellow and sometimes red cards.
BBC: Zinzan Brooke column
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Workers are sometimes not supplied with respirators for handling and cleaning the yellow cake.
CNN: NUCLEAR FALLOUT