A.A. CAZI, J.:---This suit is for (a) a decree for ordering the defendants to specifically perform their obligation under the contract by executing conveyance in favour of the plaintiffs in respect of the suit property more particularly described in the schedule annexed to the plaint with clear and unencumbered title; (aa) alternatively, if it is found that the defendants are unable to convey the suit property with clear and unencumbered title, decree for specific performance plus decree for Rs. 1 crore as compensation for not conveying clear and marketable title; (ab) a decree ordering defendants Nos. 4 to 6 to construct on the suit plot a building consisting of 60 tenements with 36790 sq. ft. built up area as per plan submitted and approved by the Bombay Municipal Corporation; (ac) alternatively, if specific performance of the agreement cannot be granted, a decree against defendants Nos. 4 to 6 ordering them to refund to the plaintiffs the consideration of Rs. 14,24,440/- together with interest thereon at the rate 20% per annum from 18-11-1983 till the date of the suit and further interest at the same rate or such rate as the Court deems fit and proper from the date of th