We need to translate visible text content to Japanese, preserving HTML tags exactly. Must output only translation, nothing else. So we need to go through each tag, translate inner text. Let's process. First paragraph:

Ribena Blackcurrant, the well-known drink that provides several health benefits, had its fair share of bad publicity in the past. But what happened to the corporation behind the brand?

Translate: "リベナ・ブラックカラントは、さまざまな健康効果があることで知られる飲料ですが、過去に悪い宣伝も経験しました。しかし、ブランド背後の企業に何が起こったのでしょうか？" Second paragraph with strong em:

Two high school students discovered that despite advertising claims that the blackcurrants in Ribena have four times the vitamin C of oranges, the drink contained almost no vitamin C at all. The manufacturers were fined NZ $217,500. 

Translate: "2人の高校生は、リベナのブラックカラントはオレンジの4倍のビタミンCが含まれているという広告の主張にもかかわら