Question: when was American singer that  Manuel Seal has as credits born 
Sentence (from "Manuel Seal"): His credits include artists as Mariah Carey, Janet Jackson, Usher, TLC, Aretha Franklin, Xscape, Cherish, Tyrese, Alicia Keys, Ashanti, Monica, Lionel Richie, Avant, Gladys Knight, Aaron Hall, George Benson, Mary J Blige, Da Brat, Jagged Edge, El DeBarge, Shanice, Johnny Gill, LSG, Tamia, Gerald Levert, Marc Dorsey and Destiny's Child.
Relevant evidence: Yes