Task: Question Answering
Input (English): Passage: For the first time during the season, the Panthers allowed a touchdown drive in the first quarter, and were down 16-6 at halftime to the 5-5 Miami Dolphins. However, Carolina came back in the second half and ultimately held the Dolphins scoreless. Trailing 13-16 with two minutes remaining, quarterback Cam Newton converted a fourth-and-10 from the Panthers' own 20 with a completion to wide receiver Steve Smith, and a touchdown pass to tight end Greg Olsen with 43 seconds left won the game for the Panthers, 20-16. Carolina extended their winning streak to seven (tying the franchise record), extended their record to 8-3 and also improved 7-18 when Newton turns the ball over. It was also the first time in their franchise history the Panthers defeated the Dolphins. 
Question: How many points did the Panthers win by? 
Answer type: Number 
Output (English): 4.