In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Among the entities, try to find the best entity that is most likely to fill in "_" and classify the answers based on options.

Juan Martin Hernandez believes Ireland's quarter-final prospects hinge on getting Johnny Sexton, his old Racing Metro club-mate, patched up and ready for Sunday. The veteran who goes by the nickname of El Mago (The Magician), Hernandez is best known in these parts for putting a stake through Irish hearts at the 2007 World Cup with a hat-trick of morale-sapping drop goals. Out-half may no longer be his stage where he stylishly struts his stuff, as he has played centre in nine of his last dozen outings following a season-long stint at full-back, but he touts Sexton as the danger to silenced in order for the Pumas to roar.Johnny Sexton could be risked for Ireland's Rugby World Cup quarter-finalThe Leinster fly-half injured an adductor muscle but is close to full fitnessJuan Martin Hernandez believes Sexton sets Ireland's tempo on the pitchRugby World Cup 2015: See the latest RWC news, results and highlights 
 Questions:He had some monumental on-pitch battles with O'Gara, but working at the same club for a year transformed _'s impression of his former enemy. (A) Juan Martin Hernandez (B) Ireland (C) Johnny Sexton (D) Racing Metro (E) El Mago (F) The Magician (G) Irish (H) World Cup (I) Sexton (J) Pumas (K) Rugby World Cup (L) Leinster (M) RWC
(A)