The Berlin International Amphitheater, dubbed by locals as 'the snail', was one-hundred feet high and shaped like a conch shell. The government could deny the existance of aliens, but they couldn't keep a lid on the 'rumors' of their existence. (in this case, rumors implying commonly known but unproven truth)
in the us, single quotes are ONLY used for a quote within a quote... doubles are what you need to use for anything else... british rules may differ...