Complex sentence: Now retired, Sue Atkins has taught and consulted in lexicography, and participated in national and international research projects in the field of computational lexicography, and originated the idea of the British National Corpus.
Split into simpler sentences: Now retired, Sue Atkins taught and consulted in lexicography, and participated in national and international research projects in the field of computational lexicography. She originated the idea of the British National Corpus.