6662
The administration of " sweet spirits of nitre " ( 4 % ethyl nitrite CH3CH2ONO in 70 % ethyl alcohol ) was followed by acute methemoglobinemia and severe anoxic metabolic acidosis in infant twins , Methylene blue administration reversed methemoglobinemia in both , but one twin died from the consequences of hypoxemia .
 acute methemoglobinemia, 4 % ethyl nitrite CH3CH2ONO in 70 % ethyl alcohol; acute methemoglobinemia, sweet spirits of nitre; died, 4 % ethyl nitrite CH3CH2ONO in 70 % ethyl alcohol; died, sweet spirits of nitre; hypoxemia, 4 % ethyl nitrite CH3CH2ONO in 70 % ethyl alcohol; hypoxemia, sweet spirits of nitre; severe anoxic metabolic acidosis, 4 % ethyl nitrite CH3CH2ONO in 70 % ethyl alcohol; severe anoxic metabolic acidosis, sweet spirits of nitre
Please list all entity pairs containing a certain relationship in the given options.Output format is "word1, word2; word3, word4". 
Option: adverse effect 
Text: {0} 
Answer:
 acute methemoglobinemia, 4 % ethyl nitrite CH3CH2ONO in 70 % ethyl alcohol; acute methemoglobinemia, sweet spirits of nitre; died, 4 % ethyl nitrite CH3CH2ONO in 70 % ethyl alcohol; died, sweet spirits of nitre; hypoxemia, 4 % ethyl nitrite CH3CH2ONO in 70 % ethyl alcohol; hypoxemia, sweet spirits of nitre; severe anoxic metabolic acidosis, 4 % ethyl nitrite CH3CH2ONO in 70 % ethyl alcohol; severe anoxic metabolic acidosis, sweet spirits of nitre