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Multiple geochemical markers , including aliphatic hydrocarbons ( n - alkanes ) , linear alkylbenzenes ( LABs ) , and polycyclic aromatic hydrocarbons ( PAHs ) , were employed to relate sediment organic chemical pollution in the coastal zone off South China to socioeconomic development there .
 Chemical: aliphatic hydrocarbons; Chemical: n - alkanes; Chemical: linear alkylbenzenes; Chemical: LABs; Chemical: polycyclic aromatic hydrocarbons; Chemical: PAHs
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: aliphatic hydrocarbons; Chemical: n - alkanes; Chemical: linear alkylbenzenes; Chemical: LABs; Chemical: polycyclic aromatic hydrocarbons; Chemical: PAHs