GISBERT HASENJAEGER is a name of a person, just like how you have a name. This person might be famous or important to someone, but it's not clear who they are.
A map is like a big puzzle that shows where things are located in the world. GIS stands for Geographic Information System, which means a computer program that helps people make and use maps. It's like a special tool that helps people work with maps.
Hasenjaeger is a last name, just like how some people might have the last name Smith, Jones, or Patel. It's part of someone's name and helps people tell them apart from others with similar first names.
So, putting it all together, GISBERT HASENJAEGER is a name of a person who might be known for their work with maps and geographic information. It's like a special tool to help people find their way around the world.