Given the task definition and input, reply with output. In this task, you're given a question, along with a context passage which has extra information available on certain terms mentioned in it. Your job is to determine which sentence(s) from the passage can be used to search for further information needed to answer the question.

Question: What date did the opening ceremonies take place in the event where Annemiek's eights team competed? Passage:De Haan started rowing in 1999 and made her international debut in the four at the 1999 Junior World Championships in Plovdiv. Together with Melina Bus, Anja Mourik and Mirthe Kamp she won the bronze medal. The following years De Haan was not that successful in rowing anymore, but she returned for the 2002 Under-23 World Championships in Genoa in the double sculls with Sarah Siegelaar, here they became fifth. A year later in Belgrade she formed a fours boat with Kamp, Susan van Kuijeren and Mette Beugelsdijk to claim another fifth place at the World Championships. As of 2004 she started participating in the Rowing World Cup circuit on senior level and she rowed to a fourth position in the fours with Marlies Smulders, Froukje Wegman and Hurnet Dekkers. Later in the year she took part in the Dutch eights that got to the fourth place in the World Cup in Munich, they qualified for the 2004 Summer Olympics and won the bronze medal there. The team existed of De Haan, Froukje Wegman, Marlies Smulders, Nienke Hommes, Hurnet Dekkers, Annemarieke van Rumpt, Sarah Siegelaar, Helen Tanger and cox Ester Workel.
Later in the year she took part in the Dutch eights that got to the fourth place in the World Cup in Munich, they qualified for the 2004 Summer Olympics and won the bronze medal there