To find the 5 most frequently appearing words in Obama's dataset and determine the number of articles in the Wikipedia dataset that contain all of those words, a script or program needs to be written.
To find the 5 most frequently appearing words in the term 'Obama', we need to count the frequency of each word in his Wikipedia dataset and then sort the words in descending order of their frequency. Once we have the 5 most frequently appearing words, we can search for the articles in the Wikipedia dataset that contain all of those words.
In order to carry out this task, we need to have access to the Wikipedia dataset, write a script or program to perform the necessary calculations, and then search for the articles that meet the given criteria. The result would be the number of articles that contain all 5 of the most frequently appearing words in Obama's dataset.