Solari: Probable cause to search means a government agent has information that will lead a person of reasonable caution to believe that a search of a particular place will turn up specific evidence of a crime.
To ascribe is to give credit for something to a specific cause or person. An example of the word ascribe could be when a scientist is noted for a discovery or invention. ascribe. ascribe.
Learner's definition of ASCERTAIN. [+ object] formal. : to learn or find out (something, such as information or the truth) They were unable to ascertain [=(more commonly) determine] the cause of the fire. The police are now attempting to ascertain his whereabouts. [=to find out where he is] Her doctors have been unable to ascertain [=find out] why she is ill. = Her doctors have been unable to ascertain the cause of her illness.