Complex sentence: But then again, in that same scene, what seems to be a Combine Advisor in a pod (with the serial number 314 URB-LOC 0017) is moved into a launching tube, where it begins a psychic attack against Gordon Freeman and Alyx Vance.
Split into simpler sentences: But then again, in that same scene, what seems to be a Combine Advisor in a pod (with the serial number 314 URB-LOC 0017). It is then moved into a launching tube, where it begins a psychic attack against Gordon Freeman and Alyx Vance.