Complex sentence: When I was a sophomore student in's BI481 Introduction to Neuroscience course at Boston College, my fellow students and I were assigned the task of writing and/or expanding Wikipedia articles concerning the field of neuroscience.
Split into simpler sentences: When I was a sophomore student in's BI481 Introduction to Neuroscience course at Boston College. My fellow students and I are assigned the task of writing and/or expanding Wikipedia articles concerning the field of neuroscience.