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.

When David Ospina dropped Kostas Fortounis' corner into his own net, the fifth official was quick to make the correct call - showing how useful they can be. On the other hand, Chelsea were unlucky not to be awarded a penalty during the dying embers of the Champions League clash as Diego Costa flicked the ball up in an attempt to go past Ivan Marcano - only for the Spanish defender to stop the ball with his arm - which the fifth official missed. Here, Sportsmail's Graham Poll gives his views on the two major talking points and why he thinks video replays should be considered.Fifth official correctly spotted David Ospina drop Kostas Fortounis' corner into his own net - without the need for goal-line technologyMichel Platini prefers using the fifth official compared to technologyBut officials missed a blatant penalty during Chelsea's loss to PortoIvan Marcano handled a Diego Costa flick in the dying momentsREAD HERE: Arsenal suffer disappointing loss to OlympiacosREAD HERE: Jose Mourinho suffers defeat in return to Porto 
 Questions:The official awarded _ their second goal when Ospina spilled the ball from a corner and replays confirmed that the ball had crossed the line. (A) David Ospina (B) Kostas Fortounis (C) Chelsea (D) Champions League (E) Diego Costa (F) Ivan Marcano (G) Spanish (H) Sportsmail (I) Graham Poll (J) Michel Platini (K) Porto (L) Arsenal (M) Olympiacos (N) Jose Mourinho
(M)