This, as well as the fact that he peed during the night and had to wear disposable nappies, was a source of profound grief for his family.
He had to wear a hat because his head was cold.
mnli hypothesis: He had to wear a hat because his head was cold. premise: This, as well as the fact that he peed during the night and had to wear disposable nappies, was a source of profound grief for his family.