her songs
... that, starting in 1989, Selena's brother A.B. Quintanilla III was the main songwriter for her songs?
... that, starting in 1989, <a href="./Selena" id="mwB_I" rel="mw:WikiLink" title="Selena">Selena</a>'s brother <a href="./A.B._Quintanilla" id="mwB_M" rel="mw:WikiLink" title="A.B. Quintanilla">A.B. Quintanilla<span id="mwB_Q" typeof="mw:Entity"> </span>III</a> was the main songwriter for <b id="mwB_U"><a class="mw-redirect" href="./List_of_Selena_songs" id="mwB_Y" rel="mw:WikiLink" title="List of Selena songs">her songs</a></b>?