sentence1: the european vlbi network is a joint facility of european , chinese and other radio astronomy institutes funded by their national research councils .
sentence2: the european vlbi 453 network is a joint fa ility of european , chinese , south afri an and other radio astronomy 454 institutes funded by their national resear h oun ils 455 the national radio astronomy observatory is a fa ility of the national s ien e foun 456 dation operated under ooperative agreement by asso iated universities , in .