Complex sentence: However, these animals fail to reach one or more of the criteria accepted as defining language; for example, Koko the gorilla couldn't break away from the here-and-now (displacement) in her signs.
Split into simpler sentences: However, these animals fail to reach one or more of the criteria accepted as defining language. For example, Koko the gorilla couldn't break away from the here-and-now (displacement) in her signs.