Simplify the following text for a Grade 11 native English-speaking person.
Original: The Class 185 ( branded by its operators as the Pennine Class 185 ) is a diesel multiple-unit passenger train built by Siemens in Germany for the British train operating company First TransPennine Express .
Simplified: The Class 185 is a diesel multiple-unit passenger train of the Desiro type built by Siemens in Germany for the British train operating company First TransPennine Express .