Do we answer "yes" to the question regarding dependents living with us for the whole year, even if they spent a significant amount of time in a mental health facility?

Our son is 17 and has significant Mental Health issues- he spent more than 1/2 of the year in and out of facilities. We were still responsible for him, but we're not sure how to answer the question of: "Did (your son) live with you for the whole year?"- help!