Task: Question Answering
Input (English): Question: Mrs. H. H. 69 years old complains that she does not sleep well. Regarding sleep in the elderly, it has been proven that: 
 Options:  <1> The non-pharmacological approach to insomnia has proved ineffective in this population. <2> The aging process is one of the main causes of insomnia. <3> They have a worse quality sleep, more fragmented and with early awakenings. <4> For the treatment of insomnia, the benzodiazepines of long half-life are those with the least side effect. <5> All hypnotics have the same side effects in the elderly.
Output (English): 3