Teacher: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.
Teacher: Now, understand the problem? Solve this instance: The Palaeoptera is the group of primitive ( basal ) winged insects which do not fold the wings back over the abdomen , as Neoptera do .
Student:
The name Palaeoptera has been traditionally applied to those ancestral groups of winged insects ( most of them extinct ) that lacked the ability to fold the wings back over the abdomen as characterizes the Neoptera .