Fig. 5: Venn plot to show the number of mentioning four subtopics and their intersections among all comments that are related to COVID-19.
From: Measuring the impact of COVID-19 on heritage sites in the UK using social media data

Number in each eclipse represents the number of comments detected with the corresponding subtopic. Number outside the circles at the bottom of the figure shows the number of comments that are not mentioning any of the four subtopics.