context: Unidentified fly object is located at any urban settlement. Library is located at school. Desk is located at library. Unidentified fly object cannot have a location of school. Picture cannot have a location of two-story house. Picture cannot have a location of envelope. Picture cannot have a location of subway tunnel. Desk is a means of accomplishing put your computer on it. Competitor is located at any urban settlement. Envelope is located at desk. Envelope is a means of accomplishing send letter. Desk cannot have a location of subway tunnel.
text: Envelope is located at desk.