Task: Question Answering
Input (English): Context: His advice was to stay on the phone with 911 , provide accurate descriptions and if possible watch what they do with the illegal substance . By keeping more watchful eyes on the park , we can hold lawbreakers accountable for their actions . The tide will turn ... Additionally , I ran into Maureen , a homeless woman who has helped us in the park cleaning project . 
Question: Why was the writer on the phone with 911 ?
Output (English): Because some people were seen with an illegal substance.