{"conversations": [{"from": "user", "value": "When Iwas 10 yeears old, my sister wasf myrage."}, {"from": "assistant", "value": "Let's Call iour sister's cavant \"x\". Whenou Were 10 yeears old, your sisters' s was/ 2 = 5 yeears old. So now thathiou a 40 iars old, your sister is = 5 + 5 + (40 - 10) = 35 yars old."}, {"from": "user", "value": "D'acord."}, {"from": "assistant", "value": ""}]}