Complex sentence: She pursued the idea of artificial insemination and marrying Hans Moleman, but, after a day at a theme park with Bart and Lisa, she decided motherhood wasn't the life for her and instead adopted Jub-Jub as her own pet.
Split into simpler sentences: She pursued the idea of artificial insemination and marrying Hans Moleman. But, after a day at a theme park with Bart Simpson and Lisa Simpson, she decided motherhood wasn't the life for her and instead she adopted Jub-Jub as her own pet.