Detailed Instructions: In this task, we ask you to elaborate the sentence without changing its general meaning. You can do so by explaining further the input sentence, using more precise wording, adding qualifiers and auxiliary information etc.
Q: The Alexander ALX400 ( later known as the TransBus ALX400 and the Alexander Dennis ALX400 ) is a 2-axle double-decker low-floor bus body .
A:
The Alexander ALX400 ( later known as the TransBus ALX400 and the Alexander Dennis ALX400 ) is a 2-axle double-decker bus body built by Walter Alexander Coachbuilders ( later by TransBus International / Alexander Dennis ) .