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If the sentence was “The dispersant’s properties cause...” then it would have an apostrophe (possessive) I believe.

[wind]
[clop clop clop]
King Arthur: Whoa there!
[clop clop clop]
Soldier #1: Halt! Who goes there?
Arthur: It is I, Arthur, son of Uther Pendragon, from the castle of Camelot. King of the Britons, defeater of the Saxons, Sovereign of all England!
Soldier #1: Pull the other one!
Arthur: I am, ...and this is my trusty servant Patsy. We have ridden the length and breadth of the land in search of knights who will join me in my court at Camelot. I must speak with your lord and master.
Soldier #1: What? Ridden on a horse?
Arthur: Yes!
Soldier #1: You’re using coconuts!
Arthur: What?
Soldier #1: You’ve got two empty halves of coconut and you’re bangin’ ‘em together.
Arthur: So? We have ridden since the snows of winter covered this land, through the kingdom of Mercia, through—
Soldier #1: Where’d you get the coconuts?
Arthur: We found them.
Soldier #1: Found them? In Mercia? The coconut’s tropical!
Arthur: What do you mean?
Soldier #1: Well, this is a temperate zone.
Arthur: The swallow may fly south with the sun or the house martin or the plover may seek warmer climes in winter, yet these are not strangers to our land?
Soldier #1: Are you suggesting coconuts migrate?
Arthur: Not at all. They could be carried.
Soldier #1: What? A swallow carrying a coconut?
Arthur: It could grip it by the husk!
Soldier #1: It’s not a question of where he grips it! It’s a simple question of weight ratios! A five ounce bird could not carry a one pound coconut.
Arthur: Well, it doesn’t matter. Will you go and tell your master that Arthur from the Court of Camelot is here?
Soldier #1: Listen. In order to maintain air-speed velocity, a swallow needs to beat its wings forty-three times every second, right?
Arthur: Please!
Soldier #1: Am I right?
Arthur: I’m not interested!
Soldier #2: It could be carried by an African swallow!
Soldier #1: Oh, yeah, an African swallow maybe, but not a European swallow. That’s my point.
Soldier #2: Oh, yeah, I agree with that.
Arthur: Will you ask your master if he wants to join my court at Camelot?!
Soldier #1: But then of course a— African swallows are non-migratory.
Soldier #2: Oh, yeah...
Soldier #1: So, they couldn’t bring a coconut back anyway...
[clop clop clop]
Soldier #2: Wait a minute! Supposing two swallows carried it together?
Soldier #1: No, they’d have to have it on a line.
Soldier #2: Well, simple! They’d just use a strand of creeper!
Soldier #1: What, held under the dorsal guiding feathers?
Soldier #2: Well, why not?