original: Under the order, about 200 buses are available in San Antonio and Houston to help in evacuations.
simplifications: About 200 buses are available in San Antonio and Houston to help in evacuations. The order gave about 200 buses to help in evacutaing San Antonio and Houston. There are 200 buses in San Antonio and Houston that can help with evacuations. About 200 buses are available in San Antonio and Houston for evacuations. About 200 evacuation buses are available in San Antonio and Houston. The order has made 200 buses available in San Antonio and Houston to help in evacuations. The order made about 200 buses available to San Antonio and Houston to help get people out. Under the order, around 200 buses can help get people get out. Under the order, about 200 evacuation buses are available in San Antonio and Houston. About 200 buses are available in San Antonio and Houston to help in evacuations.