What is the fine-grained topic of the following text: 4 of the last 6 encounters between Arsenal and Crystal Palace in North London have seen fewer than 3 goals scored and punters are advised to take a chance on Bet365’s - 4/7 (1.57) odds for that trend to continue on Sunday afternoon in English Premier League week 19. Only return the topic.
Betting odds for Arsenal and Crystal Palace's upcoming Premier League game