Simplify the following text for a Grade 9 native English-speaking person.
Original: On April 24 , 1915 , said to be the day when the Armenian Genocide officially began , he was arrested and put on a train the next day together with 180 other Armenian notables and sent to the city of Ã ankÄ rÄ in northern Central Anatolia , at a distance of some 300 miles .
Simplified: On April 24 , 1915 , said to be the day when Armenian Genocide officially began , he was arrested . The next day he was put on a train with 180 other Armenian notables and sent to the city of Ã ankÄ rÄ in northern Central Anatolia , at a distance of some 300 miles .