Add spaces: Xlii-FreeEnglishonlinedictionarybasedonWordNet3.0

Answer: Xlii - Free English online dictionary based on WordNet 3.0

Add spaces: EdithandFinnaremeanwhilebriefedonMjølner'sadventurousjourneyandtheydecidetogoandfetchhimatonce.

Answer: Edith and Finn are meanwhile briefed on Mjølner's adventurous journey and they decide to go and fetch him at once.

Add spaces: Theprincipleforthetwochairsisthesame:bothconsistof2x2bowedsteeltubing,twospacerbricksandaseatinasyntheticweavethatistensionedbyastrutandatierod.Nowelding,nofittings,noscrews.

Answer:
The principle for the two chairs is the same: both consist of 2 x 2 bowed steel tubing, two spacer bricks and a seat in a synthetic weave that is tensioned by a strut and a tie rod. No welding, no fittings, no screws.