Detailed Instructions: In this task, given a sentence in the Central Khmer language, your task is to convert it into the English language.
Q: ការចាប់ខ្លួននេះកើតឡើងមិនយូរប៉ុណ្ណោះ បន្ទាប់ពីពិធីគោរពទង់ជាតិ នៅពេលដែលពួកគេរៀបនឹងចាប់ផ្តើមចូលរៀន។
A:
The seizure occurred shortly after the flag ceremony, when they were due to start classes.