In this task, you are given a question and answer options for that question. Using this information, you have to classify each text into different topics: medicine, nursery, psychology, chemistry, pharmacology, biology.

Input: Consider Input: Question: The chloride present in a solution can be determined volumetrically, by the Mohr method, using Ag (I) as a reagent. What indicator is used in this assessment ?: 
 Options:  <0> K2Cr2O7. <1> Fe2 (SO4) 3. <2> K2CrO4. <3> KSCN <4> FeSO4.

Output: chemistry


Input: Consider Input: Question: The biological cycle of Trichinella spiralis is of the following type: 
 Options:  <0> Stenoxene <1> Optional. <2> Triheteroxene <3> Autoheteroxene <4> Heterogónico.

Output: pharmacology


Input: Consider Input: Question: The maximum urinary excretion of a drug refers to: 
 Options:  <0> The maximum concentration of unchanged drug in urine. <1> The maximum speed at which the drug can be excreted unchanged by urine. <2> The amount of urine collected after 7 biological half-lives after the administration of the drug. <3> The total amount of drug that is excreted unaltered in urine after the administration of a certain dose. <4> The amount of unchanged drug recovered in urine at 24 hours after the administration of a certain dose.


Output: pharmacology