def instructiacons ():
    print "This outlines the program"
    print "User input required for boiling point discovery"
    print "please input a the observed boiling point of your liquid"
    print "the program will analize this and return a liquid that has a boiling point within 5%"
    print "+ or - of the expected boiling point."


def within_x_percent(x):
    if x < 106 and x > 94:
        print "your liquid is water"
    elif x < 376 and x > 339:
        print "your liquid is Mercury"
    elif x < 1247 and x > 1126:
        print "you liquid is copper"
    else:
        print False

instructiacons()
I = float(raw_input("enter the observed boiling point").strip())
within_x_percent(I)