Complex sentence: The Grand Comic-book Database (GCD) is an internet-based project to build a database of comic book information, with the aim that this database will be easy to understand, retrieve information from, and contribute to.
Split into simpler sentences: The Grand Comic-book Database (GCD) is an internet-based project to build a database of comic book information. The project intends to build a database that will be easy to understand, retrieve information from, and contribute to.