Question:
Based on the premise "His uncle considered this, running a hand over his thinning head.", can we conclude that "His uncle had lost all his hair that year."?
****
Answer:
it is not possible to tell

Question:
Based on the premise "but strangely enough the best offer i mean the best bargaining i had made with a dealer on my car was also the same place i got the best price", can we conclude that "I have never made a bargain with a dealer in my entire life."?
****
Answer:
no

Question:
Based on the premise "When the largest piece to be lifted is determined from the construction plan, the necessary crane can be determined.", can we conclude that "The necessary crane can only be decided when the biggest piece to be lifted in the plan is found."?
****
Answer:
yes