11222
We observed a stronger mother - offspring ( r = 0 . 42 ; P - value = 3 . 60 x 10 ( - 61 ) ) than father - offspring correlation ( r = 0 . 33 ; P - value = 7 . 01 x 10 ( - 5 ) ) , and a significant positive association with paternal age at offspring birth ( beta = 0 . 005 ; P - value = 7 . 01 x 10 ( - 5 ) ) .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None