TASK DEFINITION: In this task, you are given a sentence in the Japanese language and your task is to convert it into the English language. In translation, keep numbers as it is and make it sentence case (capitalize only the first word of each sentence and noun).
PROBLEM: 4月には、ドイツで初めてH5N1ウィルスが家畜の鳥と野鳥から発見された。

SOLUTION: In April, H5N1 was first discovered in Germany in a domestic fowl and in wild birds.

PROBLEM: それらの改正案は4か月以内に国民投票で採決される。

SOLUTION: Those amendments would be voted on in a referendum within four months.

PROBLEM: ロビンソン氏は大麻による精神病も原因のひとつと示唆しているが、「大きな問題は、誰もデータを保存していないことだ」と嘆いた。

SOLUTION:
Robinson suggests cannabis-induced psychosis to be a contributing factor but laments "The big problem is nobody keeps any data."