Task: Question Answering
Input (English): Context: Not only that but we saw 2 dead dogs in the river - the same kind and about 50 yards apart , it was horrifying . It got dark before we could reach the take out so we stopped early next to / under a bridge on 421 . We called my mom to come pick us up on the side of the highway thinking we could make it to the bridge in 15 minutes . 
Question: Why did the narrator call their mom to come pick them up ?
Output (English): Because they were getting uncomfortable and afraid .