Bava Batra

The question was raised: What [is the ruling in the case of] a line and a half?  — Come and hear: 'If the [signatures of the] witnesses were removed two lines from the text,  [the deed] is invalid',  [from which it may be inferred that if they were removed] a line and a half only [the deed] is valid. Explain, [however], the first clause: '[If only] one line, [it is] valid'  [from which it follows] that only [if the interval was] one line is [the deed] valid but [if it was] a line and a half [the deed] is invalid! From this, then, no deduction can be made.  What about an answer to the question?  — Come and hear what has been taught: [If] the [signatures of the] witnesses were removed two lines from the text, [the deed] is invalid; [if] less than this  [it is] valid. [If] four or five witnesses have signed on a deed, and the first two were found to be relatives or [such as are in any other way] disqualified,  the evidence may be confirmed by the remaining witnesses.  [This] affords support to [the view of] Hezekiah; for Hezekiah said, '[If] it  was filled with [the signatures of] relatives, [the deed] is valid',  And there is nothing strange  [in this law],  for [while] air [space]  renders the festive tabernacle ritually unfit when [that space measures only] three [handbreadths],  unfit roofing  renders [it] ritually unfit [only] when [that roofing measures] four [handbreadths]. The question was raised: [Do] the 'two lines' which were mentioned