Task: Question Answering
Input (English): Question: The reaction of ethyl acetate and acetone in the presence of sodium hydride in diethyl ether generates, after hydrolysis: 
 Options:  <1> 2,4-Pentanedione. <2> 4-Methyl-3-penten-2-one. <3> 3-Oxobutanoate of ethyl. <4> 2,3-Pentanedione. <5> 4-Hydroxy-4-methyl-2-pentanone.
Output (English): 1