Input (grade 10): Agra's Taj Mahal is one of the most famous buildings in the world, the mausoleum of Shah Jahan's favorite wife, Mumtaz Mahal.
Output (grade 6): Agra's Taj Mahal is one of the most famous buildings in the world. It is well known for its reason to be built for Shah Jahan's favorite wife, Mumtaz Mahal.