question: who stated that there was no evidence to rule out a vacuum ?
answer: Abū Rayhān al-Bīrūnī
turker_answer: Abū Rayhān al-Bīrūnī stated that there was no evidence to rule out a vacuum .
rule-based: Abū Rayhān al-Bīrūnī stated that there was no evidence to rule out a vacuum .