<prompt> Translate the following text to EnglishKwa kuoa binti zake kwa wana wa maliki wa wakati huo na kisha kuamua kuachana na ufalme kwa wakati unaofaa, Fujiwara aliweza kuwa baba mkwe, mjomba, au babu nyuma ya kiti cha enzi.  <response>: By marrying his daughters to sons of the reigning emperor and then engineering timely abdications, a Fujiwara contrived always to be father-in-law, uncle, or grandfather behind the throne. 