11223
Interestingly , a significant and quite substantial correlation in TL between spouses ( r = 0 . 25 ; P - value = 2 . 82 x 10 ( - 30 ) ) was seen , which appeared stronger in older spouse pairs ( mean age >= 55 years ; r = 0 . 31 ; P - value = 4 . 27 x 10 ( - 23 ) ) than in younger pairs ( mean age < 55 years ; r = 0 . 20 ; P - value = 3 . 24 x 10 ( - 10 ) ) .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
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