MM (again):
The professor disappeared. Ivan Nikolaevich was perplexed, but not for long, because he suddenly realized that the professor must be found in house no. 13, and most assuredly in apartment 47.
MM (again):
The professor disappeared. Ivan Nikolaevich was perplexed, but not for long, because he suddenly realized that the professor must be found in house no. 13, and most assuredly in apartment 47.