Given the task definition and input, reply with output. In this task, you will use your knowledge about language (and common sense) to determine what element the marked number refers to. The numbers are marked with two underlines around them, like: _ number _. Your answer should be chosen from the given text, and should not contain other words.

Ethan Weston: Mom ?
Nancy Krieger Weston: What ?
Ethan Weston: Know what turtles are ?
Nancy Krieger Weston: What 's that ?
Ethan Weston: They 're fascinating .
Nancy Krieger Weston: I agree . Now , c'mere . You know I 've been thinking . We had so much fun doing our book together , I was thinking maybe we should do another project together . You have any ideas ?
Ethan Weston: I do n't .
Nancy Krieger Weston: No ? Well , I do . I was thinking , maybe we could do one this time about forests , only real ones . We could go exploring leaves and animals and stuff .
Ethan Weston: I hate nature .
Nancy Krieger Weston: Oh , you do not .
Ethan Weston: I do .
Nancy Krieger Weston: Well , turtles are nature . Why do n't we do a book about turtles ?
Ethan Weston: Dr. Seuss already did _ one _ , Mom .
Nancy Krieger Weston: Okay . Uhm . We could do a book about Indians .
Ethan Weston: I hate Indians .
Nancy Krieger Weston: Oh , Ethan , you do not ! You do n't even know any !
Ethan Weston: Do you ?
Nancy Krieger Weston: Well ... no , I ... no , not personally , but ... you know , it 'd be really great if you thought about it , you know ? Maybe think about it in your dreams ? About something we could do together ?
Ethan Weston: You mean it ?
Nancy Krieger Weston: Yeah .
book