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: マーベルは法廷に、「マンハッタンで米連邦地裁に提出された訴訟書面は”馬鹿げた主張”で一杯だ」と言った。

SOLUTION: Marvel has said the court pleadings, which were filed in U.S. District Court in Manhattan, are filled with "ridiculous claims".

PROBLEM: 領空開放条約にのっとり、ノルウェーとデンマークはベラルーシとロシア上空の観測飛行の実行を昨日開始した。

SOLUTION: In accordance with the Treaty on Open Skies, Norway and Denmark started conducting observation flights over Belarus and Russia yesterday.

PROBLEM: 土曜日、アフガニスタンのカブールの西で米軍のチヌークヘリが墜落し、38人が死亡した件で、タリバンは関与を表明している。

SOLUTION:
38 people were killed on Saturday when a US Chinook helicopter crashed west of Kabul, Afghanistan, with the Taliban claiming responsibility for the crash.