original_query: Who was William Rogulion and what was his role in the attack on Andriivka?
query: Who was William Rogulion and what was his role in the attack near Slovyansk that killed Andrea Rocchelli?
answer: William Rogulion was a French photojournalist who was wounded in the same attack near Slovyansk that killed Andrea Rocchelli and his interpreter Andrey Mironov.  His testimony is mentioned in the article regarding the investigation into Rocchelli's death.